The largest indoor bath in Omachi Onsenkyo and a shockingly cold cold plunge bath fed by spring water from the Northern Alps
Nagano Omachi City
"Kurobe Kanko Hotel" is the most historic hot spring inn in Omachi Onsenkyo, Nagano Prefecture. The large bath features two main bathing areas, Ishi no Yu, which incorporates beautiful serpentinite from the Northern Alps, and Ki no Yu, which is scented with gentle cypress. Its spacious indoor baths, filled with a sense of openness, are the largest in Omachi Onsenkyo. Each bath also has an atmospheric open-air bath. The sauna is a dry sauna called Mori no Sauna, located in the open-air area, where you can warm up gently while surrounded by nature. Right in front of the sauna room is an exceptionally cold cold plunge bath fed by free-flowing spring water from the Northern Alps, delivering an overwhelming cool-down experience found nowhere else.
TypeNatural Hot Spring
A mildly alkaline simple hot spring with a soft feel, brought in from the famous Kuzu Onsen. In the luxurious indoor bath, the largest in Omachi Onsenkyo, and in the atmospheric open-air bath surrounded by magnificent nature that changes with the seasons, you can soak leisurely in superb hot spring waters while experiencing the nature of the Northern Alps with all five senses.
Sauna TypeDry Sauna
Stove TypeConvection Stove (Sauna Stone)
Capacity4people
A tasteful dry sauna installed outdoors in the open-air area. This quiet space features gentle background music, and you can enjoy a relaxed moment of rest as you gaze out at the trees from the window, wrapped in the warmth of wood, almost as if you were deep in a green forest.
Water QualityNatural Water (Groundwater, Spring, etc.)
Capacity2people
Just one step out of Mori no Sauna, this superb cold plunge bath is installed right next to the open-air area. It is lavishly filled with free-flowing spring water from the Northern Alps, and its intensely cold water sharply and instantly tightens your heated body, creating a truly refreshing experience.
Closed Days: Open all year
〒398-0001 Nagano Prefecture, Omachi City, Taira Omachi Onsenkyo 2822
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 moreThe largest indoor bath in Omachi Onsenkyo and a shockingly cold cold plunge bath fed by spring water from the Northern Alps
Nagano Omachi City
"Kurobe Kanko Hotel" is the most historic hot spring inn in Omachi Onsenkyo, Nagano Prefecture. The large bath features two main bathing areas, Ishi no Yu, which incorporates beautiful serpentinite from the Northern Alps, and Ki no Yu, which is scented with gentle cypress. Its spacious indoor baths, filled with a sense of openness, are the largest in Omachi Onsenkyo. Each bath also has an atmospheric open-air bath. The sauna is a dry sauna called Mori no Sauna, located in the open-air area, where you can warm up gently while surrounded by nature. Right in front of the sauna room is an exceptionally cold cold plunge bath fed by free-flowing spring water from the Northern Alps, delivering an overwhelming cool-down experience found nowhere else.
TypeNatural Hot Spring
A mildly alkaline simple hot spring with a soft feel, brought in from the famous Kuzu Onsen. In the luxurious indoor bath, the largest in Omachi Onsenkyo, and in the atmospheric open-air bath surrounded by magnificent nature that changes with the seasons, you can soak leisurely in superb hot spring waters while experiencing the nature of the Northern Alps with all five senses.
Sauna TypeDry Sauna
Stove TypeConvection Stove (Sauna Stone)
Capacity4people
A tasteful dry sauna installed outdoors in the open-air area. This quiet space features gentle background music, and you can enjoy a relaxed moment of rest as you gaze out at the trees from the window, wrapped in the warmth of wood, almost as if you were deep in a green forest.
Water QualityNatural Water (Groundwater, Spring, etc.)
Capacity2people
Just one step out of Mori no Sauna, this superb cold plunge bath is installed right next to the open-air area. It is lavishly filled with free-flowing spring water from the Northern Alps, and its intensely cold water sharply and instantly tightens your heated body, creating a truly refreshing experience.
Closed Days: Open all year
〒398-0001 Nagano Prefecture, Omachi City, Taira Omachi Onsenkyo 2822
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