Mahora Ina Habiro Onsen
TypeNatural Hot Spring
A weakly alkaline, hypotonic hot spring. The water is colorless and clear with a slightly silky texture, and it is known as a beautifying hot spring for the skin.
Panoramic open-air bath overlooking the Southern Alps
Nagano Ina City
Miharashi no Yu is a day-use hot spring facility in Ina, Nagano Prefecture. It prides itself on an open-air bath on a hilltop that offers sweeping views of Ina city and the mountains of the Southern Alps. The facility features a very hot dry sauna at around 100°C and a cold plunge bath maintained at 15–16°C, and you can refresh while enjoying the best views from the infinity chairs in the outdoor relaxation area.
TypeNatural Hot Spring
A weakly alkaline, hypotonic hot spring. The water is colorless and clear with a slightly silky texture, and it is known as a beautifying hot spring for the skin.
Sauna TypeDry Sauna
Stove Typeelectric
Capacity10people
A dry sauna equipped with a convection heater operating at about 96-100°C. With no TV in the space, you can quietly take your time working up a sweat.
Capacity2people
A cold plunge bath located right next to the sauna that fits about two people. It is maintained at around 15–16°C to thoroughly cool down your body after the sauna.
Closed Days: Tuesday
Nishiminowa 3480-1, Ina, Nagano 396-0041, Japan
Gender Access
Gender Separated

Curated by an expert who visits onsen and sauna facilities every day and has explored 300+ locations — only facilities confirmed to be truly exceptional are featured.
Learn more
Panoramic open-air bath overlooking the Southern Alps
Nagano Ina City
Miharashi no Yu is a day-use hot spring facility in Ina, Nagano Prefecture. It prides itself on an open-air bath on a hilltop that offers sweeping views of Ina city and the mountains of the Southern Alps. The facility features a very hot dry sauna at around 100°C and a cold plunge bath maintained at 15–16°C, and you can refresh while enjoying the best views from the infinity chairs in the outdoor relaxation area.
TypeNatural Hot Spring
A weakly alkaline, hypotonic hot spring. The water is colorless and clear with a slightly silky texture, and it is known as a beautifying hot spring for the skin.
Sauna TypeDry Sauna
Stove Typeelectric
Capacity10people
A dry sauna equipped with a convection heater operating at about 96-100°C. With no TV in the space, you can quietly take your time working up a sweat.
Capacity2people
A cold plunge bath located right next to the sauna that fits about two people. It is maintained at around 15–16°C to thoroughly cool down your body after the sauna.
Closed Days: Tuesday
Nishiminowa 3480-1, Ina, Nagano 396-0041, Japan
Gender Access
Gender Separated

Curated by an expert who visits onsen and sauna facilities every day and has explored 300+ locations — only facilities confirmed to be truly exceptional are featured.
Learn more