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THE ISO HOTEL, Trademark Collection by Wyndham

3.5 star property

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Photo gallery for THE ISO HOTEL, Trademark Collection by Wyndham

House, 1 Bedroom, Non Smoking (Beach) | Laptop workspace, blackout curtains, Internet, bed sheets
Premium Ocean Front View (1st - 3rd Upper Floors, stair access only) | View from room
Room, 1 King Bed, Non Smoking, Ocean View | Laptop workspace, blackout curtains, Internet, bed sheets
Premium Ocean Front View (1st - 3rd Upper Floors, stair access only) | Balcony view
Premium Ocean Front View (1st - 3rd Upper Floors, stair access only) | Laptop workspace, blackout curtains, Internet, bed sheets

Reviews

8.4 out of 10
Very good

Popular amenities

  • Breakfast included
  • Air-conditioning
  • Bar

Explore the area

View in a map
4-796 Kuhio Hwy, Kapaa, HI, 96746
  • Place, Waipouli Beach
    ‪7 min walk‬
  • Place, Coconut Marketplace
    ‪17 min walk‬
  • Place, Lae Nani Beach
    ‪3 min drive‬
  • Airport, Lihue, HI (LIH)
    ‪13 min drive‬

Room options

View all photos for House, 1 Bedroom, Non Smoking (Beach)

House, 1 Bedroom, Non Smoking (Beach) | Laptop workspace, blackout curtains, Internet, bed sheets

House, 1 Bedroom, Non Smoking (Beach)

  • Sleeps 4
  • 1 King Bed

Suite, 1 Bedroom, Non Smoking, Ocean View

  • Sleeps 4
  • 1 King Bed

View all photos for Deluxe Room, 1 King Bed, Non Smoking, Ocean View

Deluxe Room, 1 King Bed, Non Smoking, Ocean View | Laptop workspace, blackout curtains, Internet, bed sheets

Deluxe Room, 1 King Bed, Non Smoking, Ocean View

  • Sleeps 4
  • 1 King Bed

View all photos for Room, 1 King Bed, Non Smoking, Ocean View

Room, 1 King Bed, Non Smoking, Ocean View | Laptop workspace, blackout curtains, Internet, bed sheets

Room, 1 King Bed, Non Smoking, Ocean View

  • Sleeps 3
  • 1 King Bed

View all photos for Room, 1 King Bed, Non Smoking, Oceanfront

Room, 1 King Bed, Non Smoking, Oceanfront | Laptop workspace, blackout curtains, Internet, bed sheets

Room, 1 King Bed, Non Smoking, Oceanfront

  • Sleeps 3
  • 1 King Bed

View all photos for Room, 1 King Bed, Non Smoking, Partial Sea View (Pool View)

Room, 1 King Bed, Non Smoking, Partial Sea View (Pool View) | Laptop workspace, blackout curtains, Internet, bed sheets

Room, 1 King Bed, Non Smoking, Partial Sea View (Pool View)

9.0 out of 10
Wonderful
(2 reviews)
  • Sleeps 3
  • 1 King Bed

View all photos for Premium Room, 1 King Bed, Non Smoking, Oceanfront

Premium Room, 1 King Bed, Non Smoking, Oceanfront | Laptop workspace, blackout curtains, Internet, bed sheets

Premium Room, 1 King Bed, Non Smoking, Oceanfront

  • Sleeps 3
  • 1 King Bed

View all photos for Deluxe Room, 2 Double Beds, Non Smoking, Ocean View

Deluxe Room, 2 Double Beds, Non Smoking, Ocean View | Laptop workspace, blackout curtains, Internet, bed sheets

Deluxe Room, 2 Double Beds, Non Smoking, Ocean View

  • Sleeps 4
  • 2 Double Beds

View all photos for Room, 2 Double Beds, Non Smoking, Ocean View

Room, 2 Double Beds, Non Smoking, Ocean View | Laptop workspace, blackout curtains, Internet, bed sheets

Room, 2 Double Beds, Non Smoking, Ocean View

  • Sleeps 4
  • 2 Double Beds

View all photos for Room, 2 Double Beds, Non Smoking, Oceanfront

Room, 2 Double Beds, Non Smoking, Oceanfront | Laptop workspace, blackout curtains, Internet, bed sheets

Room, 2 Double Beds, Non Smoking, Oceanfront

  • Sleeps 4
  • 2 Double Beds

View all photos for Room, 2 Double Beds, Non Smoking, Partial Sea View (Pool View)

Room, 2 Double Beds, Non Smoking, Partial Sea View (Pool View) | Laptop workspace, blackout curtains, Internet, bed sheets

Room, 2 Double Beds, Non Smoking, Partial Sea View (Pool View)

  • Sleeps 4
  • 2 Double Beds

View all photos for Premium Room, 2 Double Beds, Non Smoking, Oceanfront

Premium Room, 2 Double Beds, Non Smoking, Oceanfront | Laptop workspace, blackout curtains, Internet, bed sheets

Premium Room, 2 Double Beds, Non Smoking, Oceanfront

  • Sleeps 4
  • 2 Double Beds

Run Of House

  • Sleeps 2

1 King Bed, 1-Bedroom Beach House, Non-Smoking

  • Sleeps 4

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About this property

THE ISO HOTEL, Trademark Collection by Wyndham

At THE ISO HOTEL, Trademark Collection by Wyndham, relax by an outdoor pool or hit the beach where you can enjoy snorkelling.
THE ISO HOTEL, Trademark Collection by Wyndham offers 78 air-conditioned accommodations with free toiletries and a ceiling fan. Rooms open to balconies. 42-inch flat-screen televisions come with cable channels. Guests can make use of the in-room fridges and coffee/tea makers. Bathrooms include a combined bath/shower unit.
Recreational amenities at the resort include an outdoor pool.

The recreational activities listed below are available either on-site or nearby; fees may apply.

The free breakfast at THE ISO HOTEL, Trademark Collection by Wyndham gets good marks from our customers. During your stay, you're just a quick walk from Waipouli Beach. You'll find features such as an outdoor pool, a restaurant and a bar.
  • Free continental breakfast served daily
  • Enjoy local cuisine and a beachfront location while dining at The Bullshed Restaurant
  • Take a swim in the outdoor pool
  • Amenities include a water dispenser
  • On-site recreation includes bicycles to rent and yoga classes
  • Guests have great things to say about the location and the helpful staff
  • 10 minutes on foot from Waipouli Beach and a 2-minute drive from Coconut Marketplace
There's a restaurant on site. You can enjoy a drink at the bar/lounge. Free breakfast is served daily.

THE ISO HOTEL, Trademark Collection by Wyndham also features an outdoor pool, a garden, and a water dispenser.

This 3.5-star Kapaa resort is smoke free.

Guests are served a free continental breakfast daily from 7:00 AM to 9:30 AM.
The Bullshed Restaurant – This beachfront restaurant specialises in local cuisine and only serves dinner. Guests can enjoy drinks at the bar.

Property amenities

Internet

  • Available in all rooms: High-speed internet

Food and drink

  • Free continental breakfast available daily 7:00 AM to 9:30 AM
  • A bar/lounge
  • A restaurant

Restaurants on site

  • The Bullshed Restaurant

Things to do

  • Bicycle rentals
  • Outdoor pool
  • Snorkelling
  • Yoga classes

Family friendly

  • In-room refrigerator
  • Outdoor pool

Conveniences

  • Limited-hour front desk
  • Water dispenser

Outdoors

  • Garden
  • On the beach

Accessibility

  • No lift

More

  • 3 floors
  • 5 buildings
  • Smoke-free property
  • Water dispenser usage encouraged

Room amenities

Bedroom

  • Bedsheets provided
  • Blackout drapes

Bathroom

  • Free toiletries
  • Private bathroom
  • Shower/bathtub combination
  • Towels provided

Entertainment

  • 42-inch flat-screen TV with cable channels

Food and drink

  • Coffee/tea maker
  • Refrigerator

More

  • Air conditioning
  • Ceiling fan
  • Laptop workspace

Policies

Check-in

Check-in start time: 3:00 PM; check-in end time: 10:00 PM
Minimum check-in age - 18

Check-out

Check-out before 11 AM
Late check-out subject to availability
A late check-out fee will be charged

Special check-in instructions

The front desk is open daily from 7:00 AM - 10:00 PM
Front desk staffed during limited hours
Information provided by the property may be translated using automated translation tools

Access methods

Front desk (limited hours)

Pets

  • No pets allowed

Children and extra beds

  • Children 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:

  • Resort fee: USD 35.61 per accommodation, per night
The resort fee includes:
  • Additional inclusions
  • Fitness/yoga classes
  • Newspaper
  • Parking
  • Self-parking

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.

  • Late check-out is available for a fee (subject to availability)

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
Tax ID - W-34434930-01
This property accepts credit cards and debit cards; cash is not accepted
Safety features at this property include a smoke detector
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
The front desk at this property is open daily from 7:00 AM - 10:00 PM.
Front desk staff will greet guests on arrival at the property.

We should mention

  • Registered guests are the only ones allowed to be in guestrooms.

Property is also known as

Castle Mokihana
Castle Mokihana Hotel
Castle Mokihana Hotel Kapaa
Castle Mokihana Kapaa
Mokihana Of Kauai Hotel Kapaa
ISO. Island. Sky. Ocean. Resort Kapaa
ISO. Island. Sky. Ocean. Resort
ISO. Island. Sky. Ocean. Kapaa
ISO. Island. Sky. Ocean.
ISO Sky Ocean Resort Kapaa
The ISO by Castle Kapaa
The ISO by Castle Resort
The ISO. Island. Sky. Ocean.
The ISO by Castle Resort Kapaa

THE ISO HOTEL, Trademark Collection by Wyndham Reviews

Reviews

8.4

Very good

Rating 10 - Excellent. 490 out of 1000 reviews
Rating 8 - Good. 305 out of 1000 reviews
Rating 6 - Okay. 129 out of 1000 reviews
Rating 4 - Poor. 41 out of 1000 reviews
Rating 2 - Terrible. 35 out of 1000 reviews

8.6/10

Cleanliness

8.6/10

Staff & service

8.0/10

Amenities

8.2/10

Property conditions & facilities

Reviews

10/10 Excellent

Kathleen

Liked: Cleanliness, amenities, property conditions & facilities
Staff was great.
Stayed 11 nights in Feb 2026

10/10 Excellent

Jill

Liked: Cleanliness, amenities, property conditions & facilities
Incredible location. Very kind staff!
Stayed 10 nights in Feb 2026

8/10 Good

Christina

Travelled with family, Travelled with partner
Liked: Amenities
Roberta was so nice, very professional, & helpful. This is our 4 th time visiting the ISO. The rooms needed some more updating, & cleaning. The fridge was not cleaned well , the hook in the bathroom fell off, the cabinet drawer pull. The bathroom tub needs to be caulked and resealed. The breakfast is ok, the fruit cups were not ripe, We bought our own coffee and breakfast . The pool was cold, but usually the weather is so much warmer. The beds were comfy. The maintenance guy was super nice and brought us a new tv , when we got there, because they could not find the remote. Was wonderful that there were more bike’s available, we used them . The yoga was on point did it two days, was great. Mahalo!
Stayed 2 nights in Feb 2026

10/10 Excellent

blake

Travelled with group
Liked: Cleanliness, amenities, property conditions & facilities
Rooms were clean staff (except for one old lady that came in) was fantastic.
Stayed 1 night in Feb 2026

10/10 Excellent

Theresa

Stayed 2 nights in Jan 2026

10/10 Excellent

George N

Travelled with partner, Travelled with group
Liked: Cleanliness, amenities, property conditions & facilities
Yes it was clean and staff was very helpful an friendly.
Stayed 6 nights in Feb 2026

10/10 Excellent

Jenna

Stayed 2 nights in Feb 2026

10/10 Excellent

Catherine

The ISO size, customer service, and location are its best qualities
Stayed 5 nights in Jan 2026

6/10 Okay

Kenneth

Stayed 3 nights in Jan 2026

6/10 Okay

Kenneth

Travelled with family, Travelled with group
Disliked: Cleanliness
Rooms were very dated, dorm-like with concrete walls, but also right next to the ocean with nice views. Musty smelling rooms need to be updated. Vinyl flooring lifting up due to bathroom moisture. Staff is very friendly, and tried hard to accommodate all requests, but old, musty room conditions are beyond their control. Didn't use pool except one day, and it was not heated. Quick in and out was fine for me, but would be an issue had we wanted to really use it more. Yoga with Harper was a great touch.
Stayed 2 nights in Jan 2026

10/10 Excellent

Jiao

Travelled with family
Liked: Cleanliness, staff & service, amenities
Great ocean view, healthy breakfast, friendly stuff, clean rooms, convenient location
Stayed 4 nights in Jan 2026

10/10 Excellent

Sandra

Liked: Cleanliness, staff & service, amenities
The grounds are kept so clean. We were on the 1st floor and the walk out patio to the pool was so convenient. Morning yoga among the sunrise was a highlight. Staff were courteous. Grab and go breakfast was just what a person needed to start their day. Great location!!!
Stayed 2 nights in Jan 2026

10/10 Excellent

Melonie

Stayed 7 nights in Jan 2026

10/10 Excellent

Yicong

Stayed 4 nights in Jan 2026

8/10 Good

OLGA

Liked: Cleanliness, amenities, property conditions & facilities
This is very basic but nice hotel. Rooms are spacious and most have ocean view. Staff was nice (specially Rianna). Breakfast is grab and go which is very convenient. Overall we had very nice stay. Mahalo’
Stayed 7 nights in Jan 2026

10/10 Excellent

Jeremy

Stayed 8 nights in Dec 2025

8/10 Good

Richard

Stayed 5 nights in Jan 2026

8/10 Good

Ariana

Liked: Amenities
The staff was very accommodating! And the location was great.
Stayed 7 nights in Jan 2026

10/10 Excellent

Jeffrey H

Travelled with partner
Liked: Cleanliness, amenities, property conditions & facilities
Everything from check-in to check-out, the staff, the property, the location, the view, everything was amazing.
Stayed 4 nights in Jan 2026

6/10 Okay

Pearl

Travelled with family
Liked: Staff & service, amenities
Rooms need renovation
Stayed 3 nights in Jan 2026

8/10 Good

Clint

Travelled with partner
Disliked: Amenities, property conditions & facilities
Room was ok. Walk in shower was messy. Over all a good place.
Stayed 6 nights in Jan 2026

10/10 Excellent

Lina

Travelled with family, Travelled with partner
Liked: Cleanliness, staff & service, amenities, property conditions & facilities
Beautiful balcony view.
Stayed 1 night in Jan 2026

10/10 Excellent

Ameeta

Travelled with family
Liked: Cleanliness, amenities, property conditions & facilities
Absolutely beautiful—period. I would definitely stay here again. Iso Castle offers a peaceful, beach-cabin–like experience that is all about location, quiet, and natural beauty. We stayed in December and loved falling asleep to the sound of waves crashing and waking up every morning to a stunning sunrise over the ocean. The views are truly unforgettable. This is not a luxury or fancy property, and that’s part of its charm. Don’t expect a kitchen—there isn’t one—but there is a fridge, and everything was very clean and well maintained. The balcony experience was a highlight for us and added so much to the stay. I highly recommend booking a premium oceanfront room if possible. Rooms 233 and 234 are exceptional. A couple of practical notes: there is no elevator, so be prepared to carry your luggage up the stairs. The only downside was the service from one staff member at reception on Christmas Day 2024. She seemed quite grumpy and unhelpful, particularly when we asked to have our towels replaced, which was disappointing given an otherwise lovely stay. Overall, Iso Castle is a beautiful, quiet oceanfront retreat. If you value views, serenity, and a relaxed beach atmosphere, this place is well worth it.
Stayed 14 nights in Dec 2025

8/10 Good

Matthew

Travelled with partner
Liked: Cleanliness, amenities, property conditions & facilities
Convenient location and great views
Stayed 5 nights in Jan 2026

10/10 Excellent

Keith, Lafayette

Stayed 3 nights in Jan 2026