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The ISO by Castle

3.5 star property
Escape to the beach lifestyle where snorkeling adventures meet leisurely bike rides.

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Photo gallery for The ISO by Castle

Outdoor pool
Balcony view
Living room
Blackout drapes, Internet, bed sheets
Private kitchenette

Reviews

8.4 out of 10
Very good

Popular amenities

  • Bar
  • Air conditioning
  • Non-smoking
Main amenities
  • On the beach
  • Restaurant and bar/lounge
  • Outdoor pool
  • Air conditioning
  • Garden
  • Water dispenser
  • Limited hour front desk
  • Snorkeling
  • Bike rental
Feel at home
  • Refrigerator
  • Private bathroom
  • Television
  • Garden
  • Coffee/tea maker
  • Blackout drapes/curtains

Room options

Available filters for rooms
Showing 5 of 5 rooms

View all photos for Ocean Front View (1st - 3rd Upper Floors, stair access only)

Blackout drapes, Internet, bed sheets

Ocean Front View (1st - 3rd Upper Floors, stair access only)

Highlights

Balcony
Air conditioning
Free cribs/infant beds
Refrigerator
Flat-screen TV
Ceiling fan
Blackout drapes/curtains
Private bathroom
  • 26 sq m
  • Ocean view
  • Sleeps 3
  • 2 Double Beds OR 1 King Bed

View all photos for Ocean View Deluxe Room (2nd Floor, stair access only)

Blackout drapes, Internet, bed sheets

Ocean View Deluxe Room (2nd Floor, stair access only)

Highlights

Balcony
Air conditioning
Free cribs/infant beds
Refrigerator
Flat-screen TV
Ceiling fan
Blackout drapes/curtains
Private bathroom
  • 27 sq m
  • Ocean view
  • Sleeps 4
  • 1 King Bed and 1 Double Sofa Bed OR 2 Double Beds

View all photos for Ocean View (1st - 3rd Upper Floors, stair access only)

Blackout drapes, Internet, bed sheets

Ocean View (1st - 3rd Upper Floors, stair access only)

Highlights

Balcony
Air conditioning
Free cribs/infant beds
Refrigerator
Flat-screen TV
Ceiling fan
Blackout drapes/curtains
Private bathroom
  • 26 sq m
  • Ocean view
  • Sleeps 3
  • 2 Double Beds OR 1 King Bed

View all photos for Beach House Suite (2nd floor Stair Access Only)

Living area

Beach House Suite (2nd floor Stair Access Only)

Highlights

Balcony
Air conditioning
Free cribs/infant beds
Kitchen
Refrigerator
Dishwasher
Flat-screen TV
Ceiling fan
  • Ocean view
  • Sleeps 4
  • 1 King Bed and 1 Queen Sofa Bed

View all photos for One Bedroom Ocean View (2nd Floor, stair access only)

Private kitchenette

One Bedroom Ocean View (2nd Floor, stair access only)

Highlights

Balcony
Air conditioning
Free cribs/infant beds
Kitchenette
Refrigerator
Flat-screen TV
Ceiling fan
Blackout drapes/curtains
  • Ocean view
  • Sleeps 4
  • 1 King Bed and 1 Double Sofa Bed

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8.6 out of 10, Excellent, 1,010 reviews
The price is P12,874
P17,046 total
includes taxes & fees
Mar 1 - Mar 2
Aston Islander on the Beach
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About the neighborhood

Map
4-796 Kuhio Hwy, Kapaa, HI, 96746

What's nearby

  • Waipouli Beach - 10 min walk
  • Coconut Marketplace - 16 min walk
  • Lae Nani Beach - 3 min drive
  • Lydgate Beach - 6 min drive
  • Kapa'a Beach Park - 8 min drive

Getting around

  • Lihue Airport (LIH) - 14 min drive

Restaurants

  • ‪Island Country Markets #93 - ‬16 min walk
  • ‪Starbucks - ‬6 min walk
  • ‪Lava Lava Beach Club - Kauai - ‬3 min drive
  • ‪Tropical Dreams Hawaiian Gourmet Ice Cream - ‬7 min walk
  • ‪Burger King - ‬18 min walk

About this property

The ISO by Castle

Situated by the ocean, The ISO by Castle is a great choice for a stay in Kapaa. The outdoor pool is a great spot to take a dip, and guests can grab a bite to eat at The Bullshed Restaurant, which serves local cuisine and is open for dinner. Other highlights include a bar/lounge and a garden. Fellow travelers love the pool and helpful staff.

Languages

English

At a glance

DONE

Hotel size

    • 78 units
    • Arranged over 3 floors
DONE

Arriving/Leaving

    • Check-in start time: 3:00 PM; Check-in end time: 10:00 PM
    • Minimum check-in age: 18
    • Check-out time is 11 AM
    • Late check-out subject to availability
DONE

Special check-in instructions

    • The front desk is open daily from 7:00 AM - 10:00 PM
    • Front desk staffed during limited hours
DONE

Required at check-in

    • Credit card, debit card, or cash deposit required for incidental charges
    • Government-issued photo ID may be required
    • Minimum check-in age is 18
DONE

Pets

    • Pets not allowed
DONE

Other information

    • Smoke-free property

Property amenities

Food and drink

  • Restaurant
  • Bar/lounge
  • Water dispenser

What to do

  • On the beach
  • Yoga classes
  • Snorkeling
  • Golfing nearby

Services

  • Front desk (limited hours)
  • Bicycle rentals

Facilities

  • 5 buildings/towers
  • Garden
  • An outdoor pool
  • Water dispenser

Room amenities

Be entertained

  • 42-inch flat-screen TV
  • Cable TV channels

Home comfort

  • Air conditioning
  • Ceiling fan
  • Coffee/tea maker

Sleep well

  • Blackout drapes/curtains
  • Bed sheets provided

What to enjoy

  • Balcony

Freshen up

  • Private bathroom
  • Shower/tub combination
  • Free toiletries
  • Towels

Food and drink

  • Refrigerator

Special features

Dining

The Bullshed Restaurant - This beachfront restaurant specializes in local cuisine and serves dinner only. Guests can enjoy drinks at the bar.

Fees & policies

Mandatory fees

You'll be asked to pay the following charges by the property at check-in or check-out. Fees may include applicable taxes:
  • Resort fee: USD 35.38 per accommodation, per night
  • Resort fee inclusions:
    • Additional inclusions
    • Fitness/yoga classes
    • Newspaper
    • Parking
    • Self parking
    • WiFi access (may be limited)

Optional extras

  • Late check-out can be arranged for an extra charge (subject to availability)

Policies

Only registered guests are allowed in the guestrooms.
This property does not have elevators.
This property accepts credit cards and debit cards. Cash is not accepted.
State tax ID - W-34434930-01

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

Frequently asked questions

Does The ISO by Castle offer free cancellation for a full refund?

Yes, The ISO by Castle does have fully refundable room rates available to book on our site. If you’ve booked a fully refundable room rate, this can be cancelled up to a few days before check-in depending on the property's cancellation policy. Just make sure to check this property's cancellation policy for the exact terms and conditions.

Is there a pool at The ISO by Castle?

Yes, there's an outdoor pool.

Are pets allowed at The ISO by Castle?

Sorry, pets aren't allowed.

What are the check-in and check-out times at The ISO by Castle?

Check-in start time: 3:00 PM; Check-in end time: 10:00 PM. Check-out time is 11 AM. Late check-out is available for a charge (subject to availability).

What is there to do at The ISO by Castle and nearby?

Have fun during the warmer months with activities such as snorkeling. Additional recreation onsite includes yoga. Enjoy a swim in the outdoor pool or use the resort's other amenities, which include a garden.

Are there restaurants at or near The ISO by Castle?

Yes, The Bullshed Restaurant offers beachfront dining and local cuisine.

Does The ISO by Castle have any outdoor private spaces?

Yes, every room features a balcony.

What's the area around The ISO by Castle like?

The ISO by Castle is a short 10-minute walk from Waipouli Beach and 16 minutes' walk from Coconut Marketplace. Travelers give top marks for the resort's prime location.

The ISO by Castle Reviews

Reviews

8.4

Very Good

8.8/10

Cleanliness

8.4/10

Staff & service

8.0/10

Amenities

8.4/10

Property conditions & facilities

8.4/10

Eco-friendliness

Reviews

6/10 Good

Not so clean out dated room good location
Jordan, 5-night family trip
Verified Hotels.com guest review

10/10 Exceptional

Claude, 3-night family trip
Verified Hotels.com guest review

10/10 Exceptional

Sara, 2-night family trip
Verified Hotels.com guest review

10/10 Exceptional

Denise, 3-night trip with friends
Verified Hotels.com guest review

10/10 Exceptional

Deborah, 3-night family trip
Verified Hotels.com guest review

8/10 Very Good

Solid choice in Kauai!
Great ocean view and super close access to the beach! Very clean and quiet room!
Yebin, 3-night family trip
Verified Hotels.com guest review

6/10 Good

We thought the hotel was very tired although they advertise as being renovated.
Jeane, 4-night family trip
Verified Hotels.com guest review

10/10 Exceptional

3-night trip with friends
Verified Hotels.com guest review

10/10 Exceptional

Robert, 1-night trip
Verified Hotels.com guest review

10/10 Exceptional

Value for money at Ksuai
Very homely
Susmit, 5-night family trip
Verified Hotels.com guest review

8/10 Very Good

modest property on the water
good budget accommodation though not at a budget price.
douglas, 6-night trip
Verified Hotels.com guest review

10/10 Exceptional

Maria Luisa, 4-night trip
Verified Hotels.com guest review

10/10 Exceptional

Amazing
Amazing stay . Great service . Great amenities.
Javier, 4-night family trip
Verified Hotels.com guest review

6/10 Good

Rachel, 1-night trip
Verified Hotels.com guest review

8/10 Very Good

We stayed at The ISO before & had a great experience then, so we booked it for our recent vacation. We stayed 8 nights & had the best room in the hotel, which was oceanfront. Because we spend so much time away from our room, we don’t book overly expensive hotels. We prefer to spend our vacation funds on dining, excursions, visiting parks, etc. The ISO fits our budget & offers what we need. The best part of this hotel is the location & the fact that you are steps from the beach. Each morning we got to see the beautiful sunrise & we looked for shells on the beach. We also saw turtles from our balcony! This is the most affordable oceanfront hotel on Kauai. If you need extra amenities, lots of staff, housekeeping daily, room service, etc, then you may prefer to stay elsewhere. The only issue I have with this hotel is the $30 daily resort fee. If it was $15, I think that would be a more realistic fee. Overall, we were happy with the room, the staff, the grounds, the breakfast options, fridge in the room, coffee pot in the room, bed, location, etc. We will stay here again on our next visit to Kauai!
Kamichia, 8-night romance trip
Verified Expedia guest review

8/10 Very Good

Caitlin, 4-night trip
Verified Expedia guest review

10/10 Exceptional

Henry, 2-night trip
Verified Expedia guest review

10/10 Exceptional

Stunning views great service and extremely convenient and affordable
Justin, 4-night trip
Verified Expedia guest review

6/10 Good

The rooms are dated and need upgrading- the grounds and view are beautiful
James, 2-night family trip
Verified Expedia guest review

10/10 Exceptional

view and pool
Great view and pool
Gaylord, 1-night trip
Verified Hotels.com guest review

10/10 Exceptional

Jennifer L, 9-night trip
Verified Expedia guest review

8/10 Very Good

It has a surprising ocean view
Shana, 4-night trip
Verified Expedia guest review

10/10 Exceptional

If you’re looking for a Hilton or some upscale hotel this isn’t it, but it’s still very nice. We had a large room with a balcony that opened up to an ocean front view (I believe all rooms have this). When you pull up it has more of a motel feel but the room was actually very nice, spacious and had a cozy island feel. It was easy to control the temp in the room and they were able to accommodate a pack and play for my baby which I really appreciated. Free breakfast is offered daily and you can walk across the street to Safeway, the drugstore, starbucks and other shops. It’s also walking distance from some local spots which was hugely convenient for us and we loved having the boardwalk from the beach to the Sheraton Hotel right next to us because we were attending a wedding there just a walk away. We would definitely stay here again.
Ashley, 3-night family trip
Verified Expedia guest review

8/10 Very Good

Rebeca, 7-night trip
Verified Expedia guest review

6/10 Good

Property is dated. AC was not working properly during my stay. Room was ok. Clean. But very basic. Small refrigerator. No wine glasses or any basic utensils. Breakfast was a joke, consists of fruit cups if any and apples No hot foods. No fresh baked goods. They could do better than this but they’ll probably raise their prices significantly if they do.
Harry, 4-night trip
Verified Expedia guest review