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4-796 Kuhio Hwy, Kapaa, Kauai, HI 96746-1544
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Free cancellation until 06/21/21
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Free cancellation until 06/18/21
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Prices above are provided by partners for one room, with variable occupancy rules as provided by the property, and do not include all taxes and fees. Please see our partners for full details.
Traveler (104)
Room & Suite (7)
Dining (5)


#4 of 18 Specialty lodging in Kapaa
Travelers' Choice

In the Greek language, iso translates to equal. Yet, you'll quickly grasp that The ISO (Formerly Castle Mokihana) is unequalled in embracing the adventure, romance and culture of Hawaii's - Island of Discovery.

Located in the seaside town of Kapaa on Kauai's east coast, this new boutique hotel encompasses all of the best things about the Garden Isle. From charming, newly-renovated guest rooms to a variety of on-site activities and amenities, The ISO offers an experience you can carry with you forever.

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Full view
Property amenities
Free parking
Free internet
Pool / beach towels
Bicycles available
Non-smoking hotel
Outdoor pool
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Room features
Private balcony
Flatscreen TV
Room types
Ocean view
Non-smoking rooms
Family rooms
Good to know
Great View
Centrally Located
97Reviews6Q+A15Room tips
Traveler rating
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Popular mentions
Leeroy007 wrote a review Nov 2020
Australia13 contributions2 helpful votes
We had booked for 5 nights and were so looking forward to the Hawaiian life of relaxing and enjoying the comforts of the ISO. This is now no longer permitted due to air travel and government restrictions. We would like to send a huge Mahalo to the staff at the Castle Resorts for their understanding through this tough time. Especially to Amanda who was fantastic in getting our money refunded. Mahalo Mahalo. We will be coming back to Kauai as soon as possible.
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Date of stay: November 2020
SandraS0712 wrote a review Apr 2020
16 contributions6 helpful votes
We‘ve stayed for 4 nights and really liked the hotel all in all. The room and bathroom are spacious and clean. There’s no AC but we didn’t really see that as a problem since we just opened a window in the front and back of the room and had a nice breeze in the room. The only real downside to our stay was breakfast. Not only are almost all items offered sugary and quite unhealthy - the amount of waste that you produce during one single meal is unbelievable. Everything from cups to bowls or plates is made of paper or plastic and thrown away after a single use. That was quite sad to see.
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Date of stay: October 2019Trip type: Traveled as a couple
657JessC wrote a review Mar 2020
Oxford, United Kingdom6 contributions3 helpful votes
Upon arrival we felt a bit disappointed with the hotel. We had read that it’s been recently renovated but it felt a bit tired. We got upgraded which was such a bonus but didn’t feel the room was anything special. The staff also weren’t very welcoming and mostly didn’t acknowledge us. Breakfast was quite disappointing - cartons of juice, cereal bars, individual boxes of sugary cereals - and it was served in a tiny room that was quite difficult to navigate among other guests and pretty impossible to sit in. However that just meant we sat outside which was lovely. Staff in the Bull Shed restaurant also weren’t that friendly and the food is pretty expensive but it was tasty and fresh. But we did LOVE the island and it was a good location to get to the north and south. If it had been cheaper we would have felt happier but it was beyond what we would normally pay for a hotel and no where near what we’d expect in terms of facilities and customer service.
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Date of stay: February 2020Trip type: Traveled as a couple
2 Helpful votes
myharleyman53 wrote a review Feb 2020
Kansas City, Kansas8 contributions4 helpful votes
Loved our room and view.The staff was great except for the rude man stationed at the desk. He never smiled,very unfriendly and could not be bothered with questions pertinent to our stay. He would accost guests about pool towels and demand to know room number as well as having to write it down on sign-in sheet, not too classy. When my husband asked to have our boarding passes printed he pointed to directions to do it on line without even looking up. He really needs to find another job that suits his personality like maybe... the soup nazi. Had it not been for "Mr. Personality" we would give it 5 stars. Kind of puts a cloud over paradise.
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Date of stay: February 2020
Room Tip: Our room was on the south with a great view of the pool and ocean even from our bed. Sounds of...
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4 Helpful votes
Judyvan wrote a review Feb 2020
Greeley, CO50 contributions19 helpful votes
We had a breathtaking view of the Pacific and sunrise from our 3rd floor room. I could see the view laying on the bed. Although I had a bad knee, I made it work. The view was that good that I didn't want to change rooms. We found the breakfast to be good and the guests and staff very accommodating. They give you a water bottle and a refill station. Oh yes, free bike rental and Yoga that we did not use. The only problem for me with a bad knee was the chaise's were too low, and in the room there was only 4 straight chairs, very uncomfortable. I finally bought a folding lawn chair that I donated back to them. There was no microwave and no desk space. Altho it was hot in the late afternoon, it cooled down quickly with the door and window open and was cold by morning. Since we had such a great ocean view, we didn't have to visit any beaches this trip. Would highly recommend IOS.
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Date of stay: January 2020
Room Tip: above first floor so you can leave the patio door open at night.
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$133 - $326 (Based on Average Rates for a Standard Room)
mokihana of kauai hotel kapaa, mokihana kauai
United StatesHawaiiKauaiKapaa
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Frequently Asked Questions about The ISO
Which popular attractions are close to The ISO?
Nearby attractions include Luau Maka'iwa (0.1 miles), Art by Mazzarella (0.3 miles), and Pau Hana Bar & Grill (0.3 miles).
What are some of the property amenities at The ISO?
Some of the more popular amenities offered include a pool, an on-site restaurant, and free parking.
What food & drink options are available at The ISO?
Guests can enjoy an on-site restaurant during their stay.
Is parking available at The ISO?
Yes, free parking is available to guests.
What are some restaurants close to The ISO?
Conveniently located restaurants include Coconut's Fish Cafe, Tropical Dreams, and kenji Burger.
Are there opportunities to exercise at The ISO?
Yes, guests have access to a pool during their stay.
Are there any historical sites close to The ISO?
Many travelers enjoy visiting Poli'ahu Heiau (2.9 miles) and Hikinaakala Heiau (1.5 miles).
Does The ISO have any great views?
Yes, guests often enjoy the ocean view available here.