A luxurious bath-hopping experience with a meltingly beautiful-skin hot spring and 19 diverse baths
Nagano Achi Village
"Yuttari of Sato Inaka" is a hot spring inn in Hirugami Onsen, Achi Village, Shimoina District, Nagano Prefecture. Hirugami Onsen boasts a remarkable alkaline level of pH 9.8, and is renowned as a "beautiful skin bath" with a silky, smooth feel. The property features 19 different baths in all, including the "Seven Springs Garden Open-Air Bath" and the "Four Springs Indoor Baths," which let you stroll through the grounds as if on a garden walk, as well as private baths. Wrapped in the scents of hinoki cypress and bamboo charcoal, the authentic sauna overlooks the garden from its window, while the foot bath with its refreshing natural breeze and the very popular buffet are also major attractions.
TypeNatural Hot Spring
A spacious indoor bath where you can fully enjoy the beautiful skin bath of Hirugami Onsen. It boasts an impressive alkalinity of pH 9.8, and its signature feature is a silky, smooth texture. In addition to the large bath, you can also enjoy hot spring hopping across four distinctive indoor baths.
TypeNatural Hot Spring
Seven types of open-air baths scattered throughout a charming, beautifully landscaped garden. Hinoki baths, standing baths, rock baths, seasonal baths, and waterfall-style baths let you enjoy bath hopping as if strolling through the garden. Because the men and women are switched depending on the time of day, you can enjoy every bath.
TypeNatural Hot Spring
A reservation-only private open-air bath where families, groups, or couples can enjoy a luxurious hot spring experience. You can indulge in the silky waters of Hirugami Onsen all to yourself without worrying about anyone else.
TypeNatural Hot Spring
Eight foot baths installed facing the clear stream of the Achi River. This relaxing spot lets you casually enjoy the warmth of Hirugami Onsen while listening to the pleasant murmur of the river and gazing at the Southern Alps in the distance.
Sauna TypeDry Sauna
Stove TypeConvection Stove (Sauna Stone)
Capacity8people
A full-fledged dry sauna enveloped in the scent of bamboo charcoal and hinoki cypress. From the sauna room window, you can gaze through the glass at the seasonal beauty of the garden open-air baths. The pleasant far-infrared heat gently warms your body from the core and softly eases away the fatigue of travel.
Water QualityTap Water
Capacity1people
A private single-person cold plunge bath placed in a corner of the garden open-air area. It is ideal for tightening and cooling down a body that has been thoroughly heated in the sauna. *This is installed only in the bath area with hinoki baths and standing baths, which alternates between men and women depending on the time of day.
24 Hours
Closed Days: Unknown
〒395-0304 503-294 Chisato, Achi Village, Shimoina District, Nagano Prefecture
Gender Access
Gender Separated
The above applies to the communal (shared) baths. At facilities with private baths or private saunas, guests with tattoos may still be able to bathe. Please check with the facility for details.
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 moreA luxurious bath-hopping experience with a meltingly beautiful-skin hot spring and 19 diverse baths
Nagano Achi Village
"Yuttari of Sato Inaka" is a hot spring inn in Hirugami Onsen, Achi Village, Shimoina District, Nagano Prefecture. Hirugami Onsen boasts a remarkable alkaline level of pH 9.8, and is renowned as a "beautiful skin bath" with a silky, smooth feel. The property features 19 different baths in all, including the "Seven Springs Garden Open-Air Bath" and the "Four Springs Indoor Baths," which let you stroll through the grounds as if on a garden walk, as well as private baths. Wrapped in the scents of hinoki cypress and bamboo charcoal, the authentic sauna overlooks the garden from its window, while the foot bath with its refreshing natural breeze and the very popular buffet are also major attractions.
TypeNatural Hot Spring
A spacious indoor bath where you can fully enjoy the beautiful skin bath of Hirugami Onsen. It boasts an impressive alkalinity of pH 9.8, and its signature feature is a silky, smooth texture. In addition to the large bath, you can also enjoy hot spring hopping across four distinctive indoor baths.
TypeNatural Hot Spring
Seven types of open-air baths scattered throughout a charming, beautifully landscaped garden. Hinoki baths, standing baths, rock baths, seasonal baths, and waterfall-style baths let you enjoy bath hopping as if strolling through the garden. Because the men and women are switched depending on the time of day, you can enjoy every bath.
TypeNatural Hot Spring
A reservation-only private open-air bath where families, groups, or couples can enjoy a luxurious hot spring experience. You can indulge in the silky waters of Hirugami Onsen all to yourself without worrying about anyone else.
TypeNatural Hot Spring
Eight foot baths installed facing the clear stream of the Achi River. This relaxing spot lets you casually enjoy the warmth of Hirugami Onsen while listening to the pleasant murmur of the river and gazing at the Southern Alps in the distance.
Sauna TypeDry Sauna
Stove TypeConvection Stove (Sauna Stone)
Capacity8people
A full-fledged dry sauna enveloped in the scent of bamboo charcoal and hinoki cypress. From the sauna room window, you can gaze through the glass at the seasonal beauty of the garden open-air baths. The pleasant far-infrared heat gently warms your body from the core and softly eases away the fatigue of travel.
Water QualityTap Water
Capacity1people
A private single-person cold plunge bath placed in a corner of the garden open-air area. It is ideal for tightening and cooling down a body that has been thoroughly heated in the sauna. *This is installed only in the bath area with hinoki baths and standing baths, which alternates between men and women depending on the time of day.
24 Hours
Closed Days: Unknown
〒395-0304 503-294 Chisato, Achi Village, Shimoina District, Nagano Prefecture
Gender Access
Gender Separated
The above applies to the communal (shared) baths. At facilities with private baths or private saunas, guests with tattoos may still be able to bathe. Please check with the facility for details.
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