Totonou with a rare acidic spring, a self-löyly sauna, and an ice-cold plunge bath
Fukushima Nihonmatsu City
"Adatara Onsen Hotel Paradise Hills" is a hot spring lodging facility in Dake Onsen in Nihonmatsu City, Fukushima Prefecture. It offers the rare chance to enjoy a strongly acidic spring with a pH of 2.5, served straight from the source. The sauna facilities are exceptionally well equipped, featuring a full-fledged dry sauna that allows self-löyly at night. After the sauna, a cold plunge bath waits for you, and an outdoor rest while feeling the pleasant mountain breeze is pure bliss. With glamping facilities also on site, you can fully enjoy a totonou experience that deeply restores mind and body in the midst of nature.
TypeNatural Hot Spring
A nationally rare strong acidic natural hot spring with a pH of 2.5. Known as a beauty bath that leaves the skin smooth and refined, its fresh, free-flowing water warms the body from deep within. You can enjoy the rich waters in both the indoor baths and the open-air bath, and after bathing you can feel your skin becoming supple and moisturized. Experience the healing power of the hot spring to the fullest.
Sauna TypeDry Sauna
Stove TypeConvection Stove (Sauna Stone)
Capacity4people
A dry sauna where soothing heat wraps around your whole body in a calm, softly lit room. At night, self-löyly is possible, letting you enjoy the humidity and heat just the way you like it. The compact space creates an intense heat that delivers a deep sense of relaxation. The combination with the ice-cold plunge bath after sauna is exceptional.
Water QualityTap Water
Capacity1people
An ice-cold cold plunge bath located right next to the sauna. With a tub-style bath for one person, you can cool down your overheated body all at once in your own private space. The sharp cold stimulates your whole body and delivers an overwhelming sense of refreshment. You can fully enjoy alternating between hot and cold bathing with the sauna.
Closed Days: None
274-3 Dake Onsen, Nihonmatsu City, Fukushima 964-0074
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
Totonou with a rare acidic spring, a self-löyly sauna, and an ice-cold plunge bath
Fukushima Nihonmatsu City
"Adatara Onsen Hotel Paradise Hills" is a hot spring lodging facility in Dake Onsen in Nihonmatsu City, Fukushima Prefecture. It offers the rare chance to enjoy a strongly acidic spring with a pH of 2.5, served straight from the source. The sauna facilities are exceptionally well equipped, featuring a full-fledged dry sauna that allows self-löyly at night. After the sauna, a cold plunge bath waits for you, and an outdoor rest while feeling the pleasant mountain breeze is pure bliss. With glamping facilities also on site, you can fully enjoy a totonou experience that deeply restores mind and body in the midst of nature.
TypeNatural Hot Spring
A nationally rare strong acidic natural hot spring with a pH of 2.5. Known as a beauty bath that leaves the skin smooth and refined, its fresh, free-flowing water warms the body from deep within. You can enjoy the rich waters in both the indoor baths and the open-air bath, and after bathing you can feel your skin becoming supple and moisturized. Experience the healing power of the hot spring to the fullest.
Sauna TypeDry Sauna
Stove TypeConvection Stove (Sauna Stone)
Capacity4people
A dry sauna where soothing heat wraps around your whole body in a calm, softly lit room. At night, self-löyly is possible, letting you enjoy the humidity and heat just the way you like it. The compact space creates an intense heat that delivers a deep sense of relaxation. The combination with the ice-cold plunge bath after sauna is exceptional.
Water QualityTap Water
Capacity1people
An ice-cold cold plunge bath located right next to the sauna. With a tub-style bath for one person, you can cool down your overheated body all at once in your own private space. The sharp cold stimulates your whole body and delivers an overwhelming sense of refreshment. You can fully enjoy alternating between hot and cold bathing with the sauna.
Closed Days: None
274-3 Dake Onsen, Nihonmatsu City, Fukushima 964-0074
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