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Thalassa Boutique Hotel - Adults Only

4.0 star property
VIP Access

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Photo gallery for Thalassa Boutique Hotel - Adults Only

Exterior
Exterior
Exterior
Bar (on property)
Reception

Reviews

9.0 out of 10
Wonderful

Popular amenities

  • Gym
  • Bar
  • 24/7 front desk
  • Pet-friendly

Explore the area

View in a map
Lassi, Paleostafida Beach, Kefalonia, Ionian Islands, 28100
  • Place, Makris Yalos Beach
    ‪8 min walk‬
  • Place, Gradakia Beach
    ‪12 min walk‬
  • Place, Kalamia Beach
    ‪4 min drive‬
  • Airport, Argostolion (EFL-Kefalonia Island Intl.)
    ‪10 min drive‬
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  • Extra savings and perks for BONUS+ members
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Room options

View all photos for Superior Room, Garden View

Superior Room, Garden View | In-room safe, desk, soundproofing, free WiFi

Superior Room, Garden View

10.0 out of 10
Exceptional
(1 review)
  • 28 sq m
  • Sleeps 2
  • 1 Double Bed OR 2 Single Beds

View all photos for Superior Room, Sea View

Superior Room, Sea View | In-room safe, desk, soundproofing, free WiFi

Superior Room, Sea View

8.8 out of 10
Excellent
(3 reviews)
  • 28 sq m
  • Partial ocean view
  • Sleeps 2
  • 1 Double Bed OR 2 Single Beds

View all photos for Deluxe Double Room, Sea View

Deluxe Double Room, Sea View | In-room safe, desk, soundproofing, free WiFi

Deluxe Double Room, Sea View

10.0 out of 10
Exceptional
(1 review)
  • 28 sq m
  • Sea view
  • Sleeps 2
  • 1 Double Bed

View all photos for Suite, Sea View

Suite, Sea View | In-room safe, desk, soundproofing, free WiFi

Suite, Sea View

9.4 out of 10
Exceptional
(3 reviews)
  • 28 sq m
  • Sea view
  • Sleeps 2
  • 1 Double Bed

View all photos for Room, Garden View (King)

Room, Garden View (King) | In-room safe, desk, soundproofing, free WiFi

Room, Garden View (King)

10.0 out of 10
Exceptional
(2 reviews)
  • 28 sq m
  • Sleeps 2
  • 1 Double Bed

View all photos for Design Double Swim-Up Room

Design Double Swim-Up Room | In-room safe, desk, soundproofing, free WiFi

Design Double Swim-Up Room

  • Sleeps 2
  • 1 King Bed

View all photos for Design Room, Partial Ocean View (King)

Design Room, Partial Ocean View (King) | In-room safe, desk, soundproofing, free WiFi

Design Room, Partial Ocean View (King)

  • 30 sq m
  • Partial ocean view
  • Sleeps 2
  • 1 Double Bed

View all photos for Executive Double Room

Executive Double Room | In-room safe, desk, soundproofing, free WiFi

Executive Double Room

  • 30 sq m
  • Sleeps 2
  • 1 King Bed

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About this property

Thalassa Boutique Hotel - Adults Only

Adults-only hotel with free breakfast and fitness centre
A restaurant, a fitness centre and a bar/lounge are available at this smoke-free hotel. Free buffet breakfast, free WiFi in public areas and free self parking are also provided. Other amenities include a seasonal outdoor pool, concierge services and dry cleaning.
Thalassa Boutique Hotel - Adults Only offers 35 air-conditioned accommodations with a safe and a hairdryer. Rooms open to furnished balconies or patios. Flat-screen televisions are featured in guestrooms.

Rooms have partially open bathrooms. Bathrooms include baths or showers and complimentary toiletries. This Kefalonia hotel provides complimentary wireless Internet access. Housekeeping is provided on a daily basis.

Recreational amenities at the hotel include a fitness centre and a seasonal outdoor pool.
During your stay at Thalassa Boutique Hotel - Adults Only, you're just a quick walk from Ionian Sea. Features include free breakfast, free WiFi in public areas and free self-parking.
  • Free buffet breakfast served daily
  • Free WiFi
  • Free self-parking
  • Grab something to eat at the restaurant or stop for a drink at the bar/lounge
  • Take a swim in the seasonal outdoor pool
  • Services include dry cleaning/laundry, a concierge and tour or ticket assistance
  • On-site recreation includes a gym
  • 9 minutes by foot from Makris Yalos Beach and a 4-minute drive from Port of Argostoli
  • Airport shuttle service available for a fee
Thalassa Boutique Hotel - Adults Only offers its guests a fitness centre and a seasonal outdoor pool. There's a restaurant on site. You can enjoy a drink at the bar/lounge. Free breakfast is available daily. WiFi is free in public spaces.

A library, a terrace, and tour/ticket assistance are also featured at the business-friendly Thalassa Boutique Hotel - Adults Only. An airport shuttle (available 24 hours) is available for a fee. Free self parking is available.

This 4-star Kefalonia hotel is smoke free.

Guests are served a free buffet breakfast daily from 8:00 AM to 10:00 AM.
Thalassa Boutique Hotel - Adults Only has a restaurant on site.
Room service (during limited hours) is available.

Awards and affiliations

No Boutique Certification – This property has not received an official certification as a Boutique Hotel under the Hellenic Chamber of Hotels' Boutique Hotel certification scheme.

Property amenities

Internet

  • Available in all rooms: Free WiFi
  • Available in some public areas: Free WiFi

Parking and transport

  • 24-hour return airport shuttle on request for a surcharge
  • Free self parking on site

Food and drink

  • Free buffet breakfast available daily 8:00 AM to 10:00 AM
  • A bar/lounge
  • A restaurant

Things to do

  • Gym
  • Library
  • Seasonal outdoor pool

Conveniences

  • 24-hour front desk
  • Safe at front desk

Guest services

  • Concierge services
  • Dry cleaning/laundry service
  • Housekeeping (daily)
  • Tour and ticket assistance

Business services

  • Meeting rooms

Outdoors

  • Garden
  • Pool loungers
  • Pool umbrellas
  • Terrace

Accessibility

  • No lift

More

  • Smoke-free property

Room amenities

Bedroom

  • Bedsheets provided

Bathroom

  • Bathtub or shower
  • Free toiletries
  • Hair dryer
  • Partially-open bathroom
  • Towels provided

Entertainment

  • Flat-screen TV

Food and drink

  • Electric kettle
  • Limited room service

More

  • Air conditioning
  • Desk
  • Safe
  • Soundproofed rooms

Policies

Check-in

Check-in start time: 3:00 PM; check-in end time: midnight
Late check-in subject to availability
Minimum check-in age - 18

Check-out

Check-out before 11:00 AM

Special check-in instructions

This property offers transfers from the airport (surcharges may apply); guests must contact the property with arrival details before travel, using the contact information on the booking confirmation
Front desk staff will greet guests on arrival at the property
Information provided by the property may be translated using automated translation tools

Access methods

Staffed front desk

Pets

  • Pets are welcome
    • Service animals are exempt from fees.

Children and extra beds

  • Children younger than 18 are not allowed at this adults-only property. All guests 18 and older are welcome.
  • Rollaway/extra beds are not available.

Payment types at the property

Important information

Fees

Guests will be asked to pay the following charges at the property:

  • A tax is imposed by the city and collected at the property. This tax is adjusted seasonally and might not apply all year round. Other exemptions or reductions may apply. For more details, please contact the property using the information on the reservation confirmation received after booking.
  • A tax is imposed by the city: From 1 November to 31 March, EUR 3.00 per accommodation, per night
  • A tax is imposed by the city: From 1 April to 31 October, EUR 10.00 per accommodation, per night

We've listed all charges provided to us by the property.

Optional extras

The fees and deposits listed below will be charged at the time of service, check-in, or check-out.

  • Airport shuttle fee: EUR 25 per vehicle (one-way)

This may not be a comprehensive list. Fees and deposits are subject to change and might not include tax.

You need to know

This property is managed by a professional host. The provision of housing is linked to their trade, business or profession.
Extra-person charges may apply and vary depending on property policy
Government-issued photo identification and a credit card, debit card or cash deposit may be required at check-in for incidental charges
Special requests are subject to availability upon check-in and may incur additional charges; special requests cannot be guaranteed
This property accepts credit cards, debit cards and cash
Cashless transactions are available
Safety features at this property include a fire extinguisher, a smoke detector and a first aid kit
This property has outdoor spaces, such as balconies, patios and terraces, which may not be suitable for children; if you have any concerns, we recommend contacting the property prior to your arrival to confirm that they can accommodate you in a suitable room
Thalassa Boutique Hotel - Adults Only offers transfers from the airport (fees may apply). Please contact the property on the number on the booking confirmation with your arrival details prior to travel. Front desk staff will greet guests on arrival at the property.
Property Registration Number 0430Κ032A0030901

We should mention

  • On-site cash transactions can't exceed EUR 500, due to national regulations. For more details, please contact the property using information in the booking confirmation.
  • The seasonal pool will open in April and close in October.
  • This is an adults-only property and guests under 18 years old aren't allowed.

Property is also known as

Thalassa Argostoli
Thalassa Hotel
Thalassa Hotel Argostoli
Thalassa Hotel Lassi
Thalassa Lassi
Thalassa Hotel KEFALONIA
Thalassa KEFALONIA
Thalassa Boutique Hotel Kefalonia
Thalassa Boutique Kefalonia
Thalassa Boutique
Thalassa Boutique Hotel
Thalassa Adults Only Kefalonia
Thalassa Boutique Hotel - Adults Only Hotel
Thalassa Boutique Hotel - Adults Only Kefalonia
Thalassa Boutique Hotel - Adults Only Hotel Kefalonia

Reviews

Thalassa Boutique Hotel - Adults Only Reviews

9.0

Wonderful

9.4/10

Cleanliness

9.2/10

Staff & service

8.8/10

Amenities

9.0/10

Property conditions & facilities

8.6/10

Eco-friendliness
Rating 10 - Excellent. 60 out of 93 reviews
Rating 8 - Good. 26 out of 93 reviews
Rating 6 - Okay. 2 out of 93 reviews
Rating 4 - Poor. 1 out of 93 reviews
Rating 2 - Terrible. 4 out of 93 reviews

Reviews

10/10 Excellent

Alan

Travelled with partner
Liked: Cleanliness, staff & service, amenities, property conditions & facilities
Nice quality hotel. Breakfast was lovely the room was very good indeed.
Stayed 2 nights in Sep 2025

8/10 Good

Steve

Liked: Cleanliness, staff & service, property conditions & facilities, room comfort

Handy for Argostoli & exploring Southern Kefalonia

A really nice modern hotel, with a nice pool area. Really good restaurant (fantastic gyros!). Front desk really helpful sorting taxis and car hire (really efficient service for that!). Rooms a good size and comfortable. Only down side was that the balcony rarely had any sun on it, which made the room a bit dark as just patio doors for natural light (we had a Design King on east wing at front). Also there is a new hotel being built over the road so some noise and nearest beach therefore unusable. Should be finished in 2026. Also quite windy when we were there in September but pool area fairly sheltered (S side)
View from front (N)
Side view (E)
Side view (NE)
Pool
Stayed 6 nights in Aug 2025

8/10 Good

Michelle

Travelled with partner
Liked: Cleanliness, staff & service, amenities, property conditions & facilities
The hotel grounds were beautiful and the architecture was impeccable. It captured the energy and essence of a true Greek island. The swim up suite was perfect for our couple getaway. There were 3 areas of improvement that could have made this an 5 star review. 1- the wasp nests that were located on the ceiling of the outdoor seating area for breakfast. (See picture and note) 2- a sewer smell that would come through the room from the drain of the shower. 3- A/C remotes were locked to slowest fan speed making it either really warm or cold in the room.
Breakfast seating area was covered in wasp nests which made eating challenging, dangerous (I’m allergic), and difficult to enjoy your meal.
Stayed 4 nights in Aug 2025

10/10 Excellent

Karmin

Liked: Cleanliness, staff & service, property conditions & facilities, room comfort

Great stay!

This hotel was one of our favorite hotels we have stayed at in some time. Very friendly staff and the food here is amazing. They have live music some nights which was also so fun. Very comfortable spacious room with so much closet space. I would definitely come back here.
Stayed 4 nights in Aug 2025

10/10 Excellent

Mitchell

Liked: Cleanliness, staff & service, amenities, property conditions & facilities
Thalassa Boutique was the perfect resort for our stay in Kafalonia. The only amenity that would have been helpful would have been an ATM machine. A small gum would have been nice too. Overall hour 9 night, 10 day was superb.
Stayed 9 nights in Aug 2025

8/10 Good

Houssam

Liked: Cleanliness, staff & service, property conditions & facilities
Wonderful
Stayed 1 night in Aug 2025

10/10 Excellent

CINZIA

Stayed 5 nights in Aug 2025

2/10 Terrible

Michaela

Disliked: Staff & service
On check in was told swim up room I booked was not available, would not refund so we could book a swim up at another hotel (which is what we requested) so had no choice but to accept the standard room offered with no reimbursement for the difference in price. Terrible service do not book with Expedia or stay at this hotel!
Stayed 4 nights in Aug 2025

8/10 Good

Sharon

Liked: Cleanliness, staff & service, amenities, property conditions & facilities
The staff are really lovely and helpful. The hotel was clean and the pool area and restaurant were fantastic. Short walk from a few really beautiful beaches and walking distance to many restaurants in Lassi. The hotel restaurant served excellent food and drinks and the view of the sea from the hotel is amazing. While the furniture in the room was dated, it had everything I needed and was large. I especially enjoyed having a sea view and my own seating area outside. I really enjoyed my stay and hope to return some day.
Stayed 5 nights in Aug 2025

4/10 Poor

Rodney

Travelled with partner, Travelled with group
Disliked: Cleanliness, staff & service, amenities
The service from reception was extremely poor. The shower had mould in it. The bed was super hard and uncomfortable. Air con in the room hardly worked. Fridge in room didn’t get cold. Overall, very dissatisfied.
Stayed 2 nights in Jul 2025

2/10 Terrible

Corrie

Travelled with family
Disliked: Cleanliness, staff & service
We showed up to the hotel after 24 hours of travel, we had booked a swim up suite for 4 nights. We arrived and they told us we could not have the room we booked 5 weeks in advance, they gave us an old basement room for our first night. I asked them to return the difference of the room prices to us, and they bluntly said they would not return any money to us. I asked again the next day, they said they would give us a free dinner at their hotel. I said no, I want the value of the room returned, and they said no. Our service was terrible after this the entire time. The servers at the pool bar were very pleasant, the only kindness we received.
Stayed 4 nights in Jul 2025

10/10 Excellent

Justin

Stayed 7 nights in Jul 2025

10/10 Excellent

Bill

Stayed 2 nights in Jul 2025

10/10 Excellent

Yosef

Travelled with group
Liked: Cleanliness, staff & service, property conditions & facilities, room comfort
Stayed 3 nights in Jul 2025

10/10 Excellent

John J

Travelled with family
Liked: Cleanliness, staff & service, property conditions & facilities, room comfort
Stayed 4 nights in Jun 2025

10/10 Excellent

Steven

Travelled with partner
Liked: Staff & service, amenities, property conditions & facilities
Great hotel. Fantastic staff. Breakfast great. Wonderful Pool. Don't let the building work at the front put you off. You can't hear any noise at all.
Stayed 3 nights in May 2025

10/10 Excellent

Richard

Travelled with partner
Liked: Cleanliness, amenities, property conditions & facilities
What an amazing hotel. Lovely rooms that are meticulously cleaned each day and given the turn-down service at night. Fantastic food, not only the sumptuous breakfast buffet that's included, but also the lunches and dinners a la carte - all served by friendly, smiling staff. Oh and then a cocktail bar with a glorious view to start or end the night. Cannot fault it.
Stayed 8 nights in May 2025

10/10 Excellent

Paige

Liked: Cleanliness, amenities, property conditions & facilities
Beautiful hotel in a great location. The pool was gorgeous and I had an amazing view of the ocean from my room. The hotel staff were also top tier.
Stayed 3 nights in May 2025

10/10 Excellent

Jordan

Liked: Cleanliness, staff & service, property conditions & facilities, room comfort
Stayed 4 nights in Oct 2024

10/10 Excellent

Francine

Travelled with family
Liked: Cleanliness, staff & service, amenities, property conditions & facilities
Beautiful property. Hotel staff was very kind and welcoming. We would stay here again.
Stayed 4 nights in Sep 2024

6/10 Okay

Serafim

Stayed 4 nights in Sep 2024

10/10 Excellent

Callum Elliott

Travelled with family, Travelled with partner
Liked: Cleanliness, staff & service, amenities, property conditions & facilities
Quiet, tranquil hotel with attentive and friendly staff. Beautiful room overlooking the Ionian Sea on an island which felt very safe. Highly recommended.
Stayed 7 nights in Aug 2024

10/10 Excellent

Phoebe

Travelled with partner
Liked: Cleanliness, staff & service, amenities, property conditions & facilities
We stayed here for 5 nights in July and it was amazing! The hotel is beautiful, the images online do not do it justice. It is quiet, and even in peak season was not super busy. The staff are lovely, and food and drinks are amazing. We were upgraded which was a suprise and the swim up rooms were incredible. We will definitely be staying here again! Thank you!
Stayed 5 nights in Jul 2024

8/10 Good

Jillian

Travelled with partner
Liked: Cleanliness, staff & service, property conditions & facilities
Great hotel with lovely design features. Our initial rooms aircon unit had a fixed temperature so it was like an oven at night. In such hot conditions this wasn’t great - especially when they told us the technician had fixed it and it couldn’t be amended. Only to find out that other guests could control their desired temperature. After 2 nights we had to say something and they changed our room. Everyone comments on the lack of umbrellas by the pool and it’s true - it’s ridiculous and I dont understand why they don’t do anything to resolve it. The only other challenge he is there’s nowhere for guests to shower if you have a late flight. Other than that we had a great stay. Great staff and beautiful views etc
Stayed 11 nights in Aug 2024

8/10 Good

Loan

Liked: Cleanliness, staff & service, property conditions & facilities
Stayed 3 nights in Aug 2024