Here is what Hoshino Resorts is preparing next in Saga: KAI Ureshino, a 28-room hot spring inn planned for summer 2027. The property will be the Hoshino Resorts KAI brand’s first location in Saga Prefecture.
For travelers mapping a hot spring route around Ureshino Onsen, the inn will offer private open-air baths in every guest room, along with a dedicated spa treatment facility. Reservations are scheduled to begin in spring 2027.
The inn’s rooms will all use the Sato-yama Dayori Tsuboniwa-no-Ma design, with private garden views and open-air baths. The planned facilities include a shop, dining building, front desk, and the Bihada Goya spa, while the stay concept centers on Ureshino’s smooth, silky hot spring water.
About KAI Ureshino

Maisonette Guest Rooms
KAI Ureshino will have 28 maisonette-style guest rooms designed as Sato-yama Dayori Tsuboniwa-no-Ma. The rooms will combine open space with views of private gardens inspired by the satoyama landscape.

Private Open-Air Baths
Every guest room at KAI Ureshino will include a private open-air bath. Guests will be able to enjoy Ureshino Onsen’s smooth, silky water while looking out toward the room’s garden.

Tea-Inspired Interiors
Interior fittings at KAI Ureshino will incorporate real Ureshino tea leaves, reflecting the area’s tea-growing culture. Other artwork will draw on the nearby Ariake Sea.
KAI Ureshino Facilities
The planned property will include a front desk, shop, dining building, and Bihada Goya spa. The inn is scheduled to open in summer 2027 with 28 guest rooms.

The KAI Hot Spring Inn Brand
KAI is Hoshino Resorts’ nationwide hot spring inn brand. Its stays combine traditional regional culture and crafts with contemporary interpretations of local hot spring traditions.
KAI Ureshino is being designed around the natural hot spring qualities of Ureshino Onsen, known as one of Japan’s three major hot springs associated with beautiful skin. Guests will be able to combine a private bath in their room with professional spa treatments designed to complement the bathing experience.
Highlights
- All 28 guest rooms will include a private open-air bath and a small garden inspired by the surrounding satoyama landscape.
- The rooms will be maisonette-style, with ceilings of approximately 5 meters on the first floor for a spacious residential feel.
- Interior features will include original fittings incorporating real Ureshino tea leaves and artwork inspired by the Ariake Sea.
- Bihada Goya will provide spa treatments in the center of the inn, with a design inspired by the geological layers of Hizen clay.
- The property will introduce the KAI brand’s regional approach through local hot spring culture, tea, and ceramics from the Hizen area.
Stay Details
| Item | Details |
|---|---|
| Name | KAI Ureshino |
| Stay features | 28 guest rooms, private open-air baths, Bihada Goya spa, shop, dining building, and front desk |
| Period | Planned for summer 2027 |
| Location | Ureshino Onsen, Ureshino, Saga Prefecture |
| Booking period | Reservations planned to begin in spring 2027 |
| Address | Ureshino, Saga Prefecture |
| Price | Not specified in the release |
Before you buy
- When can I book KAI Ureshino?
- Reservations are planned to begin in spring 2027. The release does not provide an exact booking date.
- When will KAI Ureshino open?
- The inn is scheduled to open in summer 2027. An exact opening date has not been announced.
