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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

Lounge
Design Double Swim-Up Room | In-room safe, desk, soundproofing, free WiFi
Reception
Exterior
Bar (on property)

Reviews

9.2 out of 10
Wonderful

Popular amenities

  • Pet-friendly
  • Parking included
  • Free Wi-Fi
  • Restaurant

Explore the area

View in a map
Lassi, Paleostafida Beach, Kefalonia, Ionian Islands, 28100
  • Place, Makris Yalos Beach
    ‪8 min walk‬
  • Place, Paliostafída
    ‪12 min walk‬
  • Place, Gradakia Beach
    ‪14 min walk‬
  • Airport, Argostolion (EFL-Kefalonia Island Intl.)
    ‪12 min drive‬
VIP Access
Curated for quality and service, VIP Access stays consistently receive our highest guest ratings.
  • Expect exceptional service
  • 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)
  • Garden view
  • 28 sq m
  • Sleeps 2
  • 1 Double Bed OR 2 Single Beds
  • Free Wi-Fi

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)
  • Partial ocean view
  • 28 sq m
  • Sleeps 2
  • 1 Double Bed OR 2 Single Beds
  • Free Wi-Fi

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)
  • Sea view
  • 28 sq m
  • Sleeps 2
  • 1 Double Bed
  • Free Wi-Fi

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)
  • Sea view
  • 28 sq m
  • Sleeps 2
  • 1 Double Bed
  • Free Wi-Fi

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)
  • Garden view
  • 28 sq m
  • 1 bedroom
  • Sleeps 2
  • 1 Double Bed
  • Free Wi-Fi

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

7.0 out of 10
Good
(2 reviews)
  • Garden view
  • 1 bedroom
  • Sleeps 2
  • 1 King Bed
  • Free Wi-Fi

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)

  • Partial ocean view
  • 30 sq m
  • 1 bedroom
  • Sleeps 2
  • 1 Double Bed
  • Free Wi-Fi

View all photos for Executive Double Room

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

Executive Double Room

  • 30 sq m
  • 1 bedroom
  • Sleeps 2
  • 1 King Bed
  • Free Wi-Fi

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About this property

Thalassa Boutique Hotel - Adults Only

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
  • Limited on-site self parking

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

  • Smoking not allowed

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

Thalassa Boutique Hotel - Adults Only Reviews

Reviews

9.2

Wonderful

Rating 10 - Excellent. 70 out of 103 reviews
Rating 8 - Good. 26 out of 103 reviews
Rating 6 - Okay. 2 out of 103 reviews
Rating 4 - Poor. 1 out of 103 reviews
Rating 2 - Terrible. 4 out of 103 reviews

9.4/10

Cleanliness

9.2/10

Staff & service

9.0/10

Amenities

9.2/10

Property conditions & facilities

Reviews

Verified

10/10 Excellent

Stephen

Liked: Cleanliness, staff & service, amenities, property conditions & facilities
Beautiful adults only hotel and nice breakfast
Stayed 6 nights in Aug 2025
Verified

10/10 Excellent

Sonia

Liked: Cleanliness, amenities, property conditions & facilities
Staff were amazing especially at breakfast. Breakfast was superb with lots of variety. Great location
Stayed 7 nights in Oct 2025
Verified

10/10 Excellent

Niloufar

Liked: Cleanliness, staff & service, property conditions & facilities
The staff were welcoming and made our stay very enjoyable- would recommend the hotel throughly and hope to return!
Stayed 7 nights in Sep 2025
Verified

10/10 Excellent

Alan

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
Verified

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
Verified

10/10 Excellent

Oliver

Liked: Cleanliness, amenities, property conditions & facilities
Perfect stay
Stayed 4 nights in Oct 2022
Verified

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
Verified

10/10 Excellent

Francine

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
Verified

10/10 Excellent

Muriel

Liked: Cleanliness, staff & service, property conditions & facilities
Charming and efficient
Stayed 14 nights in Sep 2025
Verified

8/10 Good

Houssam

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

10/10 Excellent

Robert

Liked: Cleanliness, staff & service, amenities, property conditions & facilities
For us what stood out were the staff, the quality of our room and food. This hotel is perfectly located if you want quiet but dont mind a 5 min walk to the beach or the town. The taxi services are great for further afield areas. Would we come back. Definitely.
Stayed 7 nights in Oct 2025
Verified

10/10 Excellent

ZHANG

Liked: Cleanliness, staff & service, property conditions & facilities
Perfect location and nice setup with pool and bar. Like the sea view room.
Stayed 2 nights in Jul 2022
Verified

10/10 Excellent

Mary

Liked: Cleanliness, staff & service, property conditions & facilities
The property was lovely. Our room was fabulous with a sea view and breakfast everyday was amazing with beautiful views of the ocean.
Stayed 6 nights in Jul 2024
Verified

10/10 Excellent

Nicholas

Liked: Cleanliness, staff & service, amenities, property conditions & facilities
Great place to relax in comfort. Staff are excellent and great beaches nearby. Couldn’t fault it and will be returning.
Stayed 7 nights in May 2024
Verified

10/10 Excellent

Steven

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
Verified

10/10 Excellent

Callum Elliott

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
Verified

10/10 Excellent

VALERIA

Liked: Cleanliness, staff & service, amenities, property conditions & facilities
The hotel is really nice ! Excellent staff! Excellent breakfast and very beautiful room. I think I didn’t receive an upgrade because nobody told me so, but the room I had booked was really nice ! Very happy with our stay
Stayed 2 nights in Jun 2024
Verified

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
Verified

10/10 Excellent

rita

Liked: Cleanliness, staff & service, amenities, property conditions & facilities
Beautiful gardens and swimming pools beaches nearby. Plenty of restaurants to eat out. Easy access to airport. Friendly staff always happy to assist. Highly recommended.
Stayed 7 nights in Oct 2023
Verified

10/10 Excellent

Richard

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
Verified

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
Verified

10/10 Excellent

Phoebe

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
Verified

10/10 Excellent

Robert Leslie David

Liked: Cleanliness, staff & service, amenities, property conditions & facilities
Liked everything. Very relaxing, everything high quality, staff go above and beyond but not in your face. Very zen like environment didn't want to leave.
Stayed 7 nights in Jul 2024
Verified

8/10 Good

Ian

Liked: Cleanliness, staff & service, amenities, property conditions & facilities
Well laid out property, staff very good, bar, dinner breakfast all very good. A few technical issues in the room which were resolved.
Stayed 7 nights in Oct 2023
Verified

8/10 Good

Roy

Liked: Cleanliness, staff & service, property conditions & facilities
Friendly staff, extra mile, would personally like the bars to be busier. Happy hour should be happy hour, currently too restricted
Stayed 6 nights in May 2024