Hoshino Resorts KAI Kusatsu

Hoshino Resorts KAI Kusatsu

Kai Kusatsu, nestled on a quiet highland in Kusatsu, is distinguished by its expansive grounds. Buildings are dotted throughout a garden that reflects the natural beauty of Mount Kusatsu-Shirane; as you stroll along paths through the trees, you are enveloped by dappled sunlight and the songs of wild birds.
Passing through a tunnel from a forest path brings you to the bustling hot spring town. Here, you can enjoy a unique way of spending your time by experiencing two sides of Kusatsu: the lively hot spring town and the tranquil inn embraced by the woods.
Furthermore, in a building reminiscent of the Tomioka Silk Mill, you can try your hand at "Joshu-zaguri"—a traditional silk-reeling technique that has been practiced since the Edo period.

View scenic routes that include this spot

Rejuvenate through Nature and Traditional Culture on a Tokyo–Gunma Retreat

More Information about Hoshino Resorts KAI Kusatsu

Street address

464-690 Shirane, Kusatsu, Agatsuma, Gunma 377-1711

Access

Route1

  • It takes approximately 80 to 90 minutes by bus from JR Karuizawa Station to Kusatsu Onsen Bus Terminal, and about 10 minutes by bus from that Bus Terminal.

Route2

  • It takes approximately 30 minutes by bus from JR Karuizawa Station to Kusatsu Onsen Bus Terminal, and about 10 minutes by bus from that Bus Terminal.

Opening Hours

Check-in / Check-out:2:30 PM / 11:00 AM

Closed

Website

https://hoshinoresorts.com/en/hotels/kaikusatsu/

Best season

All year

Point

You can return directly to the inn from the entrance of Sainokawara Park. Please do not forget your entry pass when using the direct tunnel to return.
update: Oct.28.2026

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