A groundwater-fed cold plunge bath and skin-beautifying waters overlooking the majestic mountains of Oku-Echizen
Fukui Ono City
"Heisei no Yu" is a day-use hot spring facility located near Lake Kuzuryu in Ono City, Fukui Prefecture. Surrounded by the rich nature of Oku-Echizen, it is appealing for the chance to bathe while enjoying the magnificent seasonal mountain scenery. The natural hot spring, a simple alkaline spring, is gentle on the skin and has a smooth feel, with a reputation for leaving the skin soft and silky after bathing. The sauna is a compact retractable dry sauna, offering a calm space where you can slowly work up a good sweat. A highlight is the cold plunge bath, which uses continuously flowing groundwater, delivering a sharply cold, exceptionally refreshing experience. Combined with outdoor air bathing in the open-air area, you can enjoy a deep tototou experience in the midst of nature.
TypeNatural Hot Spring
A gentle simple alkaline hot spring that is kind to the skin. With its soft, uncomplicated texture, it warms both body and mind to the core. In the open-air bath and the pottery bath, you can bathe while looking out at the majestic mountain range and enjoy a relaxing moment that makes you forget everyday life.
Sauna TypeDry Sauna
Capacity6people
A compact, calm high-temperature dry sauna equipped with a retractable heater. The seating is two-tiered, allowing the heat in the room to be efficiently transferred to the body and encouraging a comfortable sweat. In this quiet, TV-free space, you can spend a peaceful sauna time facing yourself.
Water QualityNatural Water (Groundwater, Spring, etc.)
Capacity2people
Generously using fresh natural water pumped up from underground as a continuously flowing bath. It is sharply cold, with a piercingly crisp sense of refreshment. This cold plunge bath quickly tightens a body heated by the sauna and instantly brings you into a refreshed state, letting you feel the blessings of Oku-Echizen's nature.
Closed Days: Tuesday, Wednesday
〒912-0207 63-2-24 Shimoyama, Ono City, Fukui Prefecture
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
A groundwater-fed cold plunge bath and skin-beautifying waters overlooking the majestic mountains of Oku-Echizen
Fukui Ono City
"Heisei no Yu" is a day-use hot spring facility located near Lake Kuzuryu in Ono City, Fukui Prefecture. Surrounded by the rich nature of Oku-Echizen, it is appealing for the chance to bathe while enjoying the magnificent seasonal mountain scenery. The natural hot spring, a simple alkaline spring, is gentle on the skin and has a smooth feel, with a reputation for leaving the skin soft and silky after bathing. The sauna is a compact retractable dry sauna, offering a calm space where you can slowly work up a good sweat. A highlight is the cold plunge bath, which uses continuously flowing groundwater, delivering a sharply cold, exceptionally refreshing experience. Combined with outdoor air bathing in the open-air area, you can enjoy a deep tototou experience in the midst of nature.
TypeNatural Hot Spring
A gentle simple alkaline hot spring that is kind to the skin. With its soft, uncomplicated texture, it warms both body and mind to the core. In the open-air bath and the pottery bath, you can bathe while looking out at the majestic mountain range and enjoy a relaxing moment that makes you forget everyday life.
Sauna TypeDry Sauna
Capacity6people
A compact, calm high-temperature dry sauna equipped with a retractable heater. The seating is two-tiered, allowing the heat in the room to be efficiently transferred to the body and encouraging a comfortable sweat. In this quiet, TV-free space, you can spend a peaceful sauna time facing yourself.
Water QualityNatural Water (Groundwater, Spring, etc.)
Capacity2people
Generously using fresh natural water pumped up from underground as a continuously flowing bath. It is sharply cold, with a piercingly crisp sense of refreshment. This cold plunge bath quickly tightens a body heated by the sauna and instantly brings you into a refreshed state, letting you feel the blessings of Oku-Echizen's nature.
Closed Days: Tuesday, Wednesday
〒912-0207 63-2-24 Shimoyama, Ono City, Fukui Prefecture
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