Hotels in Karuizawa

Hoshinoya Karuizawa is the strongest onsen resort option in the Karuizawa area, offering forested hot spring bathing and ryokan-style accommodation roughly 70–80 minutes from Tokyo by Shinkansen. It suits couples and first-time ryokan guests better than business travelers or those wanting urban access. Book 4–6 weeks ahead for peak summer and autumn foliage seasons.