Notices: Regarding the opening date of Soba Kappo SAI
Soba Kappo SAI will open starting with dinner service on June 7, 2026.

Hoshino Resorts KAI Kusatsu

Check AvailabilityBest Rate Guaranteed + Flight

Contact

Address464-690 Shirane, Kusatsu, Agatsuma, Gunma 377-1711

How can we help?

Phone

Reservations: +81-50-3134-8096; Open　9:30 AM - 6:00 PM; Changes to your reservation (guests, plan, or room type) can be easily made on the confirmation page.