A 2-minute walk from Yaizu Station, with a radium sauna and rich Kuroshio Onsen for relaxation
Shizuoka Yaizu City
"Ekichika Onsen Kuroshio" is a bathing facility in Yaizu City, Shizuoka Prefecture. Its local radium sauna features auto löyly every 20 minutes, maintaining high humidity and heat at all times and encouraging deep sweating. The cold plunge bath is crisp and refreshing, and the well-equipped indoor relaxation area is another highlight. The "Yaizu Onsen" that bubbles up from underground has a high salt concentration and excellent heat-retention and moisturizing effects. Open 23 hours a day, with a cafe and library on-site.
TypeNatural Hot Spring
Uses "Yaizu Onsen" bubbling up from 1,500 m underground. This chloride spring, similar in composition to seawater, is characterized by an extremely high salt concentration. Its rich, clingy texture leaves the skin feeling deeply moisturized, and after bathing it is less likely for your body to cool down, while your skin stays soft and hydrated. Its mildly alkaline nature gently soothes the skin, helping promote beautiful skin and recovery from fatigue.
Sauna TypeDry Sauna
Stove TypeConvection Stove (Sauna Stone)
Capacity20people
A sauna room that is rare even nationwide, using Shigaraki-yaki radium ceramic plates on the walls. Twin stoves installed at the front emit powerful heat, while auto löyly is performed three times an hour to keep the room at the ideal humidity. Thanks to the negative ions and far-infrared effects released by the radium, you can warm up deeply from the core of your body and enjoy a refreshing sweating experience.
Water QualityTap Water
Capacity3people
A cold plunge bath located right next to the sauna room, perfect for cooling down. Its crisp coldness tightens the whole body and quickly settles the heat from the sauna. The indoor relaxation area is equipped with Adirondack chairs and reclining chairs, so you can spend a leisurely, relaxing totonou time.
Closed Days: None
1-13-1 Sakaecho, Yaizu City, Shizuoka 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 2-minute walk from Yaizu Station, with a radium sauna and rich Kuroshio Onsen for relaxation
Shizuoka Yaizu City
"Ekichika Onsen Kuroshio" is a bathing facility in Yaizu City, Shizuoka Prefecture. Its local radium sauna features auto löyly every 20 minutes, maintaining high humidity and heat at all times and encouraging deep sweating. The cold plunge bath is crisp and refreshing, and the well-equipped indoor relaxation area is another highlight. The "Yaizu Onsen" that bubbles up from underground has a high salt concentration and excellent heat-retention and moisturizing effects. Open 23 hours a day, with a cafe and library on-site.
TypeNatural Hot Spring
Uses "Yaizu Onsen" bubbling up from 1,500 m underground. This chloride spring, similar in composition to seawater, is characterized by an extremely high salt concentration. Its rich, clingy texture leaves the skin feeling deeply moisturized, and after bathing it is less likely for your body to cool down, while your skin stays soft and hydrated. Its mildly alkaline nature gently soothes the skin, helping promote beautiful skin and recovery from fatigue.
Sauna TypeDry Sauna
Stove TypeConvection Stove (Sauna Stone)
Capacity20people
A sauna room that is rare even nationwide, using Shigaraki-yaki radium ceramic plates on the walls. Twin stoves installed at the front emit powerful heat, while auto löyly is performed three times an hour to keep the room at the ideal humidity. Thanks to the negative ions and far-infrared effects released by the radium, you can warm up deeply from the core of your body and enjoy a refreshing sweating experience.
Water QualityTap Water
Capacity3people
A cold plunge bath located right next to the sauna room, perfect for cooling down. Its crisp coldness tightens the whole body and quickly settles the heat from the sauna. The indoor relaxation area is equipped with Adirondack chairs and reclining chairs, so you can spend a leisurely, relaxing totonou time.
Closed Days: None
1-13-1 Sakaecho, Yaizu City, Shizuoka 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