Onsen & SAUNA SPA

It has been approximately 800 years since the hot spring was discovered and first opened. The people who protect the hot spring source are called “Yumori,” and this precious source has been carefully preserved over generations by these dedicated guardians.

"800 years since the opening of the hot spring"

A hot spring beloved by warriors, shoguns, samurai, and ninja.

At Matsukawakan, we direct the hot spring, discovered approximately 800 years ago, straight from the source to the spout. Our alkaline hot spring offers a rich fragrance and a smooth texture, allowing you to fully enjoy its natural benefits. Although the spring water has a temperature of about 70°C, we adjust it without adding water by utilizing the difference in elevation. Adding water to this precious gift of nature diminishes its valuable components, so we take various measures to avoid this. From the amount of water flowing into the baths to the depth, size, and careful management of the source, we take great care in preserving the integrity of our hot spring.

Soothe your soul

private Spa

“Indulge in the ultimate luxury of a private, open-air bath. Our exclusive baths are nestled amidst a serene forest setting, providing the perfect escape from the hustle and bustle of everyday life. Immerse yourself in the therapeutic waters of our natural hot spring while surrounded by nature’s beauty. Please note that due to the outdoor nature of these baths, showers may not be available during colder months. To ensure a truly authentic experience, we recommend using a bucket to rinse before entering the bath. Access to the private baths is through a dedicated outdoor walkway.”

  • 6:00 am - 9:00 am
  • 2:00 pm - 0:00 pm
Separate communal baths for men and women

The indoor bath at the inn

At Matsukawakan, we direct the hot spring, discovered approximately 800 years ago, straight from the source to the spout. Our alkaline hot spring offers a rich fragrance and a smooth texture, allowing you to fully enjoy its natural benefits. Although the spring water has a temperature of about 70°C, we adjust it without adding water by utilizing the difference in elevation. Adding water to this precious gift of nature diminishes its valuable components, so we take various measures to avoid this. From the amount of water flowing into the baths to the depth, size, and careful management of the source, we take great care in preserving the integrity of our hot spring.

Opening Hours
  • 6:00 am - 9:00 am
  • 2:00 pm - 0:00 pm
Have you ever tried a forest sauna? It's amazing!

Forest sauna

  • A sauna built in the middle of a forest, surrounded by trees and nature. 
  • You can enjoy the heat of the sauna while listening to the sounds of nature. 
  • It’s a unique experience that combines the benefits of a traditional sauna with the healing power of nature. 
  • Our forest sauna offers a truly unique and relaxing experience.
  • OPEN:6:00 am - 23:00 pm
  • Bathing hours are divided into private and public sessions. Swimsuits are required for all bathing areas. Rental swimsuits are available for a fee. Towel rentals are free of charge. For the convenience of our guests, we provide rental surf ponchos or yukata for moving between the changing area and the sauna area. Please refrain from moving around the facility in swimsuits only.
Experience ultimate relaxation in a sky-high sauna that feels just like a treehouse!

Sky sauna

A newly renovated rooftop sauna offering stunning views of Matsukawa Valley, selected as one of the top 100 sunset spots in Shinano. Choose between a plunge pool or a warm bath. Even if you don’t use the sauna, you can enjoy the warm bath. Ranked second in Nagano Prefecture on the sauna app “Saunakiitai” among approximately 460 sauna facilities. Experience the changing seasons with sunrises, sunsets, and starry nights.

  • OPEN:6:00 am - 23:00 pm
  • Bathing hours are divided into private and public sessions. Swimsuits are required for all bathing areas. Rental swimsuits are available for a fee. Towel rentals are free of charge. For the convenience of our guests, we provide rental surf ponchos or yukata for moving between the changing area and the sauna area. Please refrain from moving around the facility in swimsuits only.
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