Property building in The ISO by Castle

The ISO by Castle

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Hotel Highlights

Welcome to The ISO by Castle, your ideal Hawaiian getaway nestled in the charming town of Kapa‘a! This delightful 4-star hotel is more than just a place to sleep; it’s a vibrant setting where relaxation meets adventure. Located just 1.5 kilometers from the city center, you’re perfectly positioned to explore local attractions while enjoying the serenity of beachfront living. With prices starting from only $137, you can experience the beauty of Hawaii without breaking the bank.

Living room in The ISO by Castle
Living room in The ISO by Castle

Rooms

Show 6 photos

2 Double Beds

1 King Size Bed

Deluxe, 2 Double/King, Ocean View

Balcony

Free wifi

Flat-screen TV

Refrigerator

Soak in gorgeous Pacific scenery from the private lanai of these recently upgraded accommodations. Comfort & style prevail through stylish island decor, WiFi, flat screen, air conditioning, ceiling fan, coffeemaker, and refrigerator. With prime views of Kauai’s eastern shore, these rooms appeal with modern island decor, natural wood tones and a cheerful color palette. Includes 1 King or 2 Double beds. Located on the 2nd Floor. Accessible by stairs only.

Show 6 photos

2 Double Beds

1 King Size Bed

Room - 2 Double/King, Oceanfront

Balcony

Free wifi

Flat-screen TV

Refrigerator

Enjoy the Pacific views from your private lanai in these newly upgraded guest rooms with chic island decor. Conveniences include WiFi, flat screen, air conditioning, ceiling fan, and refrigerator. With views of the magnificent Pacific ocean from your private lanai, you can’t go more “oceanfront” than this. These rooms feature contemporary island decor & natural wood tones balanced by a cheerful color palette. Includes 1 king bed or 2 double beds. Located on 1st, 2nd, or 3rd floor. Upper floors accessible by stairs only.

The Beach House Suite in The ISO by Castle

Show 11 photos

1 King Size Bed

1 Sofa Bed

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635 sqft

House Suite, Beach View

Ocean view

Kitchen

Private Bathroom

Balcony

Step into our spacious Beach House Suite, where you can enjoy stunning ocean views from your private balcony, cook delicious meals in the fully-equipped kitchen, and relax in utmost comfort in the king size bed or on the cozy sofa bed. With room for 4 adults and 3 children, this suite offers the perfect beachside retreat for the whole family.

Discover More

Every stay at The ISO by Castle comes with a buffet of amenities tailor-made for your comfort and enjoyment. Enjoy breathtaking ocean views from your balcony as you sip on a tropical drink from the bar, or take a leisurely stroll to the beach just steps away. Feeling adventurous? Dive into the outdoor swimming pool or whip up a feast in your own kitchenette, stocked with kitchenware for all your culinary needs. With free parking, free Wi-Fi, and non-smoking rooms, this hotel has all you need to unwind and escape from everyday life.

View (from property/room) in The ISO by Castle
Lobby or reception in The ISO by Castle

Experience the Best

With over 1,183 reviews, travelers rave about their experiences, highlighting the fantastic service and stunning surroundings. Whether you're lounging on the patio, enjoying free toiletries, basking in the sun, or savoring a meal at the on-site restaurant, The ISO by Castle is not just a place to stay—it's a slice of paradise waiting for you to explore. Plan your unforgettable Hawaiian getaway today!

Photo of the whole room, Bed in The ISO by Castle
Living room in The ISO by Castle

Plan Your Stay

At The ISO by Castle, every corner brims with charm, ensuring your Hawaiian vacation is as lively as it is relaxing! Dive into the refreshing outdoor pool, where you can splash under the golden sun or lounge poolside with your favorite book. For those looking to satisfy their appetites without straying far from paradise, the on-site Bull Shed restaurant promises a delightful dining experience with its family-friendly vibe and a menu packed with tasty American fare. Whether you're sharing laughs over a meal or enjoying a romantic dinner under the stars, the ambiance here perfectly complements the picturesque surroundings.

Continental breakfast in The ISO by Castle
Restaurant/places to eat in The ISO by Castle

Amenities

Free parking

Restaurant

Beachfront

Outdoor swimming pool

Free wifi

Beach

Air conditioning

Bar

Bathroom in The ISO by Castle
Bathroom in The ISO by Castle

Pool

Outdoor

Swimming pool in The ISO by Castle
Area and facilities in The ISO by Castle

Restaurant

Bull Shed

Family Friendly, Traditional, Modern, Romantic, American

Continental breakfast in The ISO by Castle
Restaurant/places to eat in The ISO by Castle
Bedroom, Bed in The ISO by Castle
This was a wonderful property that felt like part of the community, surrounded by local businesses and using a responsible amount of land. We are so glad we stayed here instead of at a resort. Some favorites: 1. Free bike rental with helmets available! The hotel is in such a bikeable area with easy access to the coastal trail. 2. Breakfast was great--a nice variety for a free grab&go-- especially the fresh pineapple. 3. We loved the pool. We didn't do the sunrise yoga, but it was neat to see it every morning. 4. The ocean views and access were excellent, and the outdoor lighting was bright enough to feel safe but dim enough that you could see stars and the ocean at night-- unlike the resorts just south of us. We loved our private balcony. 5. While there aren't laundry facilities on the premises, there's a great new laundromat just across the street. This was easy and convenient. 6. The free water bottles and water were very helpful for staying hydrated on active Kauai days of hiking, biking, and kayaking. 7. Customer Service was consistently great.

Karlyn

Please remember the following description of our hotel experience: We had an oceanfront view from the second floor, facing the pool, and enjoyed some privacy thanks to the nearby trees. The room was clean and comfortable. The hotel's location was convenient for heading north, south, and to the west shore, and we had many activities scheduled. The hotel offers a fantastic sunrise view but could use nicer and more comfortable beach chairs. Although the beach in front of the hotel may not be the most beautiful, it was good enough for a morning or evening walk. There was plenty of parking available, and the pool was nice, clean, and had enough chairs. There was also a small fireplace where we could hang out after dinner. The breakfast was grab-and-go style, which was fine for us. Bonus is the yo Ga class at 7 AM, the instructor she is super sweet and great!

Smon

We love the relatively small size of the hotel. The ocean views are spectacular. Although it is convenient to the Coconut Marketplace and the shopping center across the street, the hotel is bordered by an open field and a canal on either side. The convenient and scenic walking path does not extend beachside of the hotel which prevents a constant parade of walkers and bikers in front of the hotel. The hotel is peaceful and private. The Bull Shed is attached to the hotel but the only noise from the restaurant is the lovely live music.The vibe at the ISO is laid back and mellow. This is our second time there and are eager to return. We also enjoy the yogurt, cereal and fresh pineapple for breakfast. It is perfect for us.The fire pit, chairs and picnic tables are spaced out nicely providing a relaxing place to view the ocean from.

Carol

Very nice hotel in a comfortable location, easily accessible with the car and with some options within a walking distance or by bike (available in the hotel to rent). The room was fully equipped, including a fridge & coffee machine. The hotel provides refillable bottle & a purified water fountain in the hall. Amenities and enough clean towels were provided for our 3 nights stays, if more needed you can ask the reception. However worth noticing they don’t have daily cleaning service, but rely on DIY services providing you with the resources to ensure a clean room & nice stay. It was surprising but we actually appreciated it as a way to reduce waste & understandable with the min staff they have. The Grab & Go breakfast is a nice concept that allowed us to enjoy beautiful sunrises from the room or the beach.

Carmen

The location is absolutely great for exploring the entire island, being situated right in the middle. The staff were wonderful, particularly the very friendly front desk team. Parking was ample and convenient, located right in front. The garden and pool area were well-kept and featured a cozy fireplace. The pool itself was very clean. The provided breakfast was decent, though coffee was missing from the main area (fortunately, there was a coffee machine in the room). We also enjoyed great views from the rooms. Plus, they offer free bike rental, which is a fantastic bonus!

Oskar

This was a wonderful property that felt like part of the community, surrounded by local businesses and using a responsible amount of land. We are so glad we stayed here instead of at a resort. Some favorites: 1. Free bike rental with helmets available! The hotel is in such a bikeable area with easy access to the coastal trail. 2. Breakfast was great--a nice variety for a free grab&go-- especially the fresh pineapple. 3. We loved the pool. We didn't do the sunrise yoga, but it was neat to see it every morning. 4. The ocean views and access were excellent, and the outdoor lighting was bright enough to feel safe but dim enough that you could see stars and the ocean at night-- unlike the resorts just south of us. We loved our private balcony. 5. While there aren't laundry facilities on the premises, there's a great new laundromat just across the street. This was easy and convenient. 6. The free water bottles and water were very helpful for staying hydrated on active Kauai days of hiking, biking, and kayaking. 7. Customer Service was consistently great.

Karlyn

Please remember the following description of our hotel experience: We had an oceanfront view from the second floor, facing the pool, and enjoyed some privacy thanks to the nearby trees. The room was clean and comfortable. The hotel's location was convenient for heading north, south, and to the west shore, and we had many activities scheduled. The hotel offers a fantastic sunrise view but could use nicer and more comfortable beach chairs. Although the beach in front of the hotel may not be the most beautiful, it was good enough for a morning or evening walk. There was plenty of parking available, and the pool was nice, clean, and had enough chairs. There was also a small fireplace where we could hang out after dinner. The breakfast was grab-and-go style, which was fine for us. Bonus is the yo Ga class at 7 AM, the instructor she is super sweet and great!

Smon

We love the relatively small size of the hotel. The ocean views are spectacular. Although it is convenient to the Coconut Marketplace and the shopping center across the street, the hotel is bordered by an open field and a canal on either side. The convenient and scenic walking path does not extend beachside of the hotel which prevents a constant parade of walkers and bikers in front of the hotel. The hotel is peaceful and private. The Bull Shed is attached to the hotel but the only noise from the restaurant is the lovely live music.The vibe at the ISO is laid back and mellow. This is our second time there and are eager to return. We also enjoy the yogurt, cereal and fresh pineapple for breakfast. It is perfect for us.The fire pit, chairs and picnic tables are spaced out nicely providing a relaxing place to view the ocean from.

Carol

Very nice hotel in a comfortable location, easily accessible with the car and with some options within a walking distance or by bike (available in the hotel to rent). The room was fully equipped, including a fridge & coffee machine. The hotel provides refillable bottle & a purified water fountain in the hall. Amenities and enough clean towels were provided for our 3 nights stays, if more needed you can ask the reception. However worth noticing they don’t have daily cleaning service, but rely on DIY services providing you with the resources to ensure a clean room & nice stay. It was surprising but we actually appreciated it as a way to reduce waste & understandable with the min staff they have. The Grab & Go breakfast is a nice concept that allowed us to enjoy beautiful sunrises from the room or the beach.

Carmen

The location is absolutely great for exploring the entire island, being situated right in the middle. The staff were wonderful, particularly the very friendly front desk team. Parking was ample and convenient, located right in front. The garden and pool area were well-kept and featured a cozy fireplace. The pool itself was very clean. The provided breakfast was decent, though coffee was missing from the main area (fortunately, there was a coffee machine in the room). We also enjoyed great views from the rooms. Plus, they offer free bike rental, which is a fantastic bonus!

Oskar

This was a wonderful property that felt like part of the community, surrounded by local businesses and using a responsible amount of land. We are so glad we stayed here instead of at a resort. Some favorites: 1. Free bike rental with helmets available! The hotel is in such a bikeable area with easy access to the coastal trail. 2. Breakfast was great--a nice variety for a free grab&go-- especially the fresh pineapple. 3. We loved the pool. We didn't do the sunrise yoga, but it was neat to see it every morning. 4. The ocean views and access were excellent, and the outdoor lighting was bright enough to feel safe but dim enough that you could see stars and the ocean at night-- unlike the resorts just south of us. We loved our private balcony. 5. While there aren't laundry facilities on the premises, there's a great new laundromat just across the street. This was easy and convenient. 6. The free water bottles and water were very helpful for staying hydrated on active Kauai days of hiking, biking, and kayaking. 7. Customer Service was consistently great.

Karlyn

Please remember the following description of our hotel experience: We had an oceanfront view from the second floor, facing the pool, and enjoyed some privacy thanks to the nearby trees. The room was clean and comfortable. The hotel's location was convenient for heading north, south, and to the west shore, and we had many activities scheduled. The hotel offers a fantastic sunrise view but could use nicer and more comfortable beach chairs. Although the beach in front of the hotel may not be the most beautiful, it was good enough for a morning or evening walk. There was plenty of parking available, and the pool was nice, clean, and had enough chairs. There was also a small fireplace where we could hang out after dinner. The breakfast was grab-and-go style, which was fine for us. Bonus is the yo Ga class at 7 AM, the instructor she is super sweet and great!

Smon

We love the relatively small size of the hotel. The ocean views are spectacular. Although it is convenient to the Coconut Marketplace and the shopping center across the street, the hotel is bordered by an open field and a canal on either side. The convenient and scenic walking path does not extend beachside of the hotel which prevents a constant parade of walkers and bikers in front of the hotel. The hotel is peaceful and private. The Bull Shed is attached to the hotel but the only noise from the restaurant is the lovely live music.The vibe at the ISO is laid back and mellow. This is our second time there and are eager to return. We also enjoy the yogurt, cereal and fresh pineapple for breakfast. It is perfect for us.The fire pit, chairs and picnic tables are spaced out nicely providing a relaxing place to view the ocean from.

Carol

Very nice hotel in a comfortable location, easily accessible with the car and with some options within a walking distance or by bike (available in the hotel to rent). The room was fully equipped, including a fridge & coffee machine. The hotel provides refillable bottle & a purified water fountain in the hall. Amenities and enough clean towels were provided for our 3 nights stays, if more needed you can ask the reception. However worth noticing they don’t have daily cleaning service, but rely on DIY services providing you with the resources to ensure a clean room & nice stay. It was surprising but we actually appreciated it as a way to reduce waste & understandable with the min staff they have. The Grab & Go breakfast is a nice concept that allowed us to enjoy beautiful sunrises from the room or the beach.

Carmen

The location is absolutely great for exploring the entire island, being situated right in the middle. The staff were wonderful, particularly the very friendly front desk team. Parking was ample and convenient, located right in front. The garden and pool area were well-kept and featured a cozy fireplace. The pool itself was very clean. The provided breakfast was decent, though coffee was missing from the main area (fortunately, there was a coffee machine in the room). We also enjoyed great views from the rooms. Plus, they offer free bike rental, which is a fantastic bonus!

Oskar

Location

4-796 Kuhio Highway, Kapaa, 96746, Hawaii, United States

Reservations:

+1 (888) 385-8465

or
The ISO by Castle

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