Is this The ISO by Castle pet-friendly for guests?

No, pets are not allowed at this property. Check the guest reviews to learn what guests had to share.

Does the The ISO by Castle have a swimming pool?

Yes, this The ISO by Castle has a swimming pool. Check the Facility Overview section for details about the pool and other available facilities.

How much does it cost per night to stay in The ISO by Castle?

Best-rates for the The ISO by Castle starts from $281 per night with includes Bar, Guest Services, Child Friendly, Internet, Pool, TV, Balcony/Terrace, Security/Safety, Bedding/Linens, Restaurant, Toiletries, Kitchen, Air Conditioner with all other facilities. matches every traveler with their perfect accommodation, whether you are traveling with a group, friends, family, or pets.

Is The ISO by Castle a family-friendly place to stay?

Based on the information we have received from the owner or our partner, this is considered to be a family-friendly property. Families have rated this resort 3 stars or guests have recommended them suitable for families. As reported by the owner or manager, the resort has specified that children are welcome. Please see details about suitability for your family or inquire with the property to learn more.

Is the The ISO by Castle wheelchair accessible or offer services for disabled guests?

Based on the information received from our partner, the The ISO by Castle has not specified they are wheelchair accessible. Likewise, there is not an elevator specified as being available at the property. Specific accessibility details may be addressed in the property details section of this page.

What is the minimum night stay policy for the The ISO by Castle?

Based on the information reported by the owner or manager, the The ISO by Castle indicates 1 day stay policy at this resort. Guests are cautioned that the minimum stay policy may differ based on seasonality or availability and may be at the discretion of the owner or manager.

What cancellation policy is in place for The ISO by Castle?

Guests are cautioned that the cancellation policy may differ based on seasonality, availability, or current travel restrictions. Guests should also be aware that this policy may be subject to change and should be confirmed prior to booking. More details may be available on this page in the property description. However, early check-in or late check-out can sometimes be negotiated between the guest and the owner or the manager of this property.

The ISO by Castle | Resort in Kapaa

| 8.4 (1002 Reviews) | 1 Bathroom

Resort in Wailua, Kapaa

Beachfront, with outdoor pool
At The ISO by Castle, relax by an outdoor pool or hit the beach where you can enjoy snorkeling.
The ISO by Castle offers 78 air-conditioned accommodations with complimentary toiletries and ceiling fans. Rooms open to balconies. 42-inch flat-screen televisions come with cable channels. Guests can make use of the in-room refrigerators and coffee/tea makers. Bathrooms include shower/tub combinations.
Recreational amenities at the resort include an outdoor pool.

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

Amenities

Air Conditioner

Pool

Balcony/Terrace

Security/Safety

Bedding/Linens

Restaurant

Bar

Toiletries

Guest Services

Child Friendly

Internet

Kitchen

Facility Overview

Bathrooms

Shower/tub combination

Private bathroom

Free toiletries

Towels

Bedroom

Ceiling fan

Blackout drapes/curtains

Bed sheets

Air conditioning

Laptop-friendly workspace

Breakfast

1 bar

1 restaurant

Coffee/tea maker

Refrigerator

Accessibility

This property does not have elevators

Activities

Golfing

Outdoor pool

Snorkeling

Yoga classes

Bicycle rentals

Entertainment

Cable channels

42-inch flat-screen TV

General

Water dispenser

English

Smoke-free property

Water dispenser

Guest Services

Outdoor pool

Refrigerator

Front desk (limited hours)

Internet

Available in all rooms: Internet access

Outdoors

Garden

Beachfront location

Balcony

Policies

Check-in

Check-in start time: 3:00 pm; check-in end time: 10:00 pm minimum check-in age: 18

Check-out

A late check-out fee will be charged check-out before 11 am late check-out subject to availability

Child Policy

Children are welcome. rollaway/extra beds are not available.

Payment Policy

Late check-out is available for a fee (subject to availability) the above list may not be comprehensive. fees and deposits may not include tax and are subject to change.

Pet Policy

Pets not allowed

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 safety features at this property include a smoke detector 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 this property has outdoor spaces, such as balconies, patios, terraces which may not be suitable for children; if you have concerns, we recommend contacting the property prior to your arrival to confirm they can accommodate you in a suitable room

Reviews

Hallei

Sep 24, 2025 11:18:55 PM

Review Score: 10

Summary: It's a great hotel, near the airport and the main road to go anywhere in Kauai. I will definitely stay there again.

See All Reviews

Room Arrangement

Room Info	Facilities
Ocean Front View (1st - 3rd Upper Floors, stair access only) Room Size: 290 square feet m² 2 Double Beds 1 King Bed	General Ping - 8, Number of living rooms 0, Number of bedrooms - 0, Square feet - 290, Square meters - 27, In-room playpen, Bed count minimum 1, Ocean view, Free cribs/infant beds, Bed count maximum 2
Deluxe Room, Ocean View (2nd Floor - stair access only) Room Size: 290 square feet m² 2 King Bed and Double Sofa Bed 2 Double Beds	General Ping - 8, Number of living rooms 0, Number of bedrooms - 0, Square feet - 290, Square meters - 27, Separate sitting area, In-room playpen, Ocean view, Bed count minimum 2, Free cribs/infant beds, Bed count maximum 2
Partial Ocean/Pool View (1st - 2nd Upper Floors, stair access only) Room Size: 290 square feet m² 2 Double Beds 1 King Bed	General Ping - 8, Number of living rooms 0, Number of bedrooms - 0, Square feet - 290, Partial ocean view, Square meters - 27, Bed count minimum 1, Free cribs/infant beds, Bed count maximum 2
Ocean View (1st - 3rd Upper Floors, stair access only Room Size: 290 square feet m² 2 Double Beds 1 King Bed	General Ping - 8, Number of living rooms 0, Number of bedrooms - 0, Square feet - 290, Square meters - 27, In-room playpen, Bed count minimum 1, Ocean view, Free cribs/infant beds, Bed count maximum 2
Beach House Suite (2nd floor, stair access only) Room Size: 640 square feet m² 2 King Bed and Queen Sofa Bed	General Number of living rooms 0, Toaster, Ice maker, Number of bedrooms - 1, Dishwasher, Microwave, Stovetop, Square meters - 59, Location - top floor, In-room playpen, Square feet - 640, Separate dining area, Free cribs/infant beds, Cookware, dishware, and utensils, Kitchen, No rollaway/extra beds, Paper towels, Ping - 18, Separate sitting area, Freezer, Oven, Ocean view, Bed count minimum 2, Bed count maximum 2
One Bedroom Ocean View (2nd Floor, stair access only) Room Size: 580 square feet m² 2 King Bed and Double Sofa Bed	General Number of living rooms 0, Kitchenette, Number of bedrooms - 1, Square feet - 580, In-room playpen, Separate dining area, Free cribs/infant beds, Square meters - 54, Ping - 16, Paper towels, Separate sitting area, Ocean view, Bed count minimum 2, Bed count maximum 2
Premium Ocean Front View (1st - 3rd Upper Floors, stair access only) Room Size: 290 square feet m² 1 King Bed	General Ping - 8, Number of living rooms 0, Number of bedrooms - 0, Square feet - 290, Square meters - 27, Bed count minimum 1, Ocean view, Bed count maximum 1, Free cribs/infant beds