Opening in June 2026
KAI Kusatsu
A private tunnel connects this nature-secluded hot spring ryokan to the historical Kusatsu hot spring resort area, allowing guests to enjoy baths in both intimate and lively settings.Highlights
13ONSEN
Kusatsu is home to several hot springs known for their skin-cleansing properties, two of which feed the ryokan's baths—including an outdoor bath decorated with stunning rock formations.
23LEISURE
While the ryokan offers quietude and elegance, the resort area just outside is a lively stretch of modern and traditional establishments offering distinctive bathing experiences. Enjoying the best of both worlds is one of the pleasures of spending several nights here.
33KAISEKI
Dinners begin with a rillette of boar and runner-bean miso. The main is chicken thighs cooked in a nutrient-rich broth until it is soft enough to fall off the bone, followed by an invigorating congee prepared in the soup with tangy black vinegar.
Rooms
KAI Signature Rooms offer a deeper dive into the local culture.The "Silk Art Room" at KAI Kusatsu is an exquisite space featuring an impressive wall of handcrafted silk art, highlighted by glossy silk thread dots.
Local
Attractions
Directions
Hoshino Resorts KAI Kusatsu
464-690 Shirane, Kusatsu, Agatsuma, Gunma 377-1711
Mapcode: 341 446 751*34
Hotel
Details
Guest Rooms
Room Occupancy
Restaurant
Onsen
Meeting Room
Check-in / Check-out
Wi-Fi
Bed share
Pets
Bookings will only be accepted from within Japan. For further information, please check the Japanese website pages.
Special Arrangements
Celebratory Box(Reservations required, until 4:00PM the day before)
Shuttle service
Parking
Private free parking is available without reservation.
EV charging
Available 24 hours
200V/6kw×4 units
Application available after lodging reservation
External guests allowed (priority given to overnight guests) Registration at the front desk on the day of arrival
Online Payments
Onsite Payments
Water dispenser
Available
Facilities
- Restaurant
- Café / Lounge
- Spa / Massage
- Playroom
- Pool
- Onsen
- Public bath
- Meeting Room
General
Smoking is prohibited in the entire building (smoking area available)