What are the opening hours of Tonbo no Yu?

10:00 AM to 10:00 PM (last admission 9:15 PM)

What is the admission price for Tonbo no Yu?

1350 yen (1550 yen during peak season)

Hoshino Onsen

In Naka Karuizawa district —

12 of 12 in Karuizawa

Hoshino Onsen (星野温泉) is a peaceful and rejuvenating hot spring nestled within the picturesque Hoshino Resort in Karuizawa. The onsen features Tonbo no Yu (トンボの湯), a public bathhouse that offers both indoor and outdoor pools, allowing guests to soak in the soothing waters while enjoying the serene surroundings. Set in an elegant and tranquil environment, the bathhouse provides a relaxing experience with gender-segregated facilities to ensure privacy and comfort for all visitors. The atmosphere is perfect for unwinding after a day of sightseeing or outdoor activities.

Just a short walk from the onsen, the luxurious Hoshinoya Resort offers an even more exclusive experience with its own hot spring baths. This upscale resort seamlessly combines the natural beauty of Karuizawa with world-class spa facilities, providing an indulgent retreat for those seeking ultimate relaxation. Guests at Hoshinoya can enjoy the same serene environment while being pampered in a sophisticated setting. Whether visiting the public bath at Tonbo no Yu or enjoying a stay at Hoshinoya, this area is an ideal destination for those looking to relax and recharge amidst the tranquility of Karuizawa's scenic beauty.

Hours and Fees

Tonbo no Yu

Getting there

Google Maps

To reach Hoshino Onsen from Karuizawa Station, take the Shinano Railway train to Naka-Karuizawa Station. The journey takes about 5 minutes and costs 230 yen. From Naka-Karuizawa Station, you can take a Seibu bus towards Hoshino Resort, which takes around 15 minutes and costs 290 yen. Alternatively, you can take the town loop bus from Naka-Karuizawa Station, which operates every 1-2 hours and costs 200 yen. These options will easily take you to the relaxing Hoshino Onsen.