Hawaii, United States|Get Location
Hotel Type: 3 Star

The ISO

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WifiFront DeskPool

About the hotel

Welcome to The ISO by Castle, your charming escape nestled in the heart of Kapaa, specifically in the lovely Waipouli area of Hawaii. If you're dreaming of a beachside holiday with convenient access to the island's wonders, you've found your spot. We're just a stone's throw from the golden sands of Waipouli Beach and the vibrant Coconut Marketplace, making it easy to dive into the local scene.

For those eager to explore further afield, Nawiliwili Harbor is a mere 8.5 miles away, and the tranquil Fuji Beach is practically on your doorstep, just 0.9 miles from our resort. Whether you're looking to soak up the sun, enjoy water sports, or discover the unique culture of Kauai, The ISO provides a fantastic base for your island adventures.

At VervTrip, we’re dedicated to helping you find the best value for your holiday. We’re proud to offer our Best Price Match guarantee, ensuring you get competitive rates for your stay at The ISO, often lower than you'll find on major booking sites. Let us help you plan your perfect Hawaiian getaway!

Why guests love staying here

Great Location

Conveniently placed near public transport, shopping, and key attractions.

Stylish & Comfortable

Modern rooms with cozy interiors and thoughtful design touches.

Top-notch Amenities

Enjoy breakfast, gym access, and more during your stay.

Excellent Service

Friendly staff and seamless hospitality from check-in to check-out.

Available Rooms

No rooms available for your selected dates

The ISO does not currently have rooms available from 23 Oct 2026 to 26 Oct 2026. Availability may change, so please try alternative dates or explore similar hotels nearby.

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Frequently Asked Questions

Q. What time is check-in at The ISO?

A: Check-in at The ISO is from 16:00. Early check-in may be available on request, subject to room availability — contact the hotel directly to arrange it.

Q. What time is check-out at The ISO?

A: Check-out at The ISO is by 08:00. Late check-out may be available for an additional fee, subject to availability — please contact the hotel in advance to arrange it.

Q. Where is The ISO located?

A: The ISO is located at 4-796 Kuhio Hwy KAPAA, HI 96746, Hawaii, United States.

Q. Does The ISO offer WiFi?

A: Yes, The ISO offers complimentary WiFi for guests, so you can stay connected throughout your stay.

Q. Is parking available at The ISO?

A: Yes, The ISO offers parking for guests free of charge. Availability may be limited, so we recommend arriving early or contacting the hotel to reserve a space.

Q. Does The ISO have a swimming pool?

A: Yes, The ISO has an outdoor swimming pool for guests to enjoy. Please contact the hotel for pool opening hours and any access guidelines.

Q. What is the cancellation policy at The ISO?

A: Cancellation policies at The ISO vary by room and rate. Each room option is clearly labelled "Free Cancellation" or "Non Refundable", so you can see the policy before booking. Choose a Free Cancellation rate if you'd like the flexibility to change your plans.

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