A stylish hotel equipped with a top-floor observation open-air bath overlooking Otaru’s sea and nightscape, plus separate saunas for men and women
Hokkaido Otaru City
Grids Premium Hotel Otaru is a lifestyle hotel in Inaho, Otaru, Hokkaido, boasting an excellent location for sightseeing, about a 4-minute walk from the Otaru Canal. From the large public bath on the top floor, you can take in sweeping panoramic views of Otaru’s beautiful streetscape and the vast expanse of Ishikari Bay. The men’s large public bath is equipped with an authentic high-temperature dry sauna and a properly cold cold plunge bath, while the women’s large public bath features a warm mist sauna with strong detox effects that lets you slowly work up a comfortable sweat. Enjoy a superb outdoor bath experience on the top-floor open-air bath while feeling the sea breeze.
Sauna TypeDry Sauna
Stove TypeConvection Stove (Sauna Stone)
Capacity6people
A dry sauna equipped in the men’s large public bath, featuring a two-tier bench and a convection stove. The crisp, comfortable, authentic heat fills the room, allowing you to work up an astonishing amount of sweat efficiently from head to toe. The warmth from the sauna stones gently envelops your body and thoroughly melts away daily fatigue.
Sauna TypeSteam Sauna
Capacity6people
A luxurious mist sauna available only in the women’s large public bath. The temperature is set to be mild and gentle, and fine warm mist fills the room generously. Even if you are not fond of very hot saunas, you can enjoy a deep detox experience without feeling short of breath, while slowly moisturizing your whole body over time.
Water QualityTap Water
Capacity3people
A clean, well-chilled cold plunge bath installed only in the men’s large public bath. Set to an exquisite level of coldness, it refreshingly cools down the body heated by the dry sauna next door, all the way through. After entering, a pleasant chill envelops the body and heightens anticipation for outdoor bathing.
Closed Days: Open all year
〒047-0032 1-3-13 Inaho, Otaru, Hokkaido
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 moreA stylish hotel equipped with a top-floor observation open-air bath overlooking Otaru’s sea and nightscape, plus separate saunas for men and women
Hokkaido Otaru City
Grids Premium Hotel Otaru is a lifestyle hotel in Inaho, Otaru, Hokkaido, boasting an excellent location for sightseeing, about a 4-minute walk from the Otaru Canal. From the large public bath on the top floor, you can take in sweeping panoramic views of Otaru’s beautiful streetscape and the vast expanse of Ishikari Bay. The men’s large public bath is equipped with an authentic high-temperature dry sauna and a properly cold cold plunge bath, while the women’s large public bath features a warm mist sauna with strong detox effects that lets you slowly work up a comfortable sweat. Enjoy a superb outdoor bath experience on the top-floor open-air bath while feeling the sea breeze.
Sauna TypeDry Sauna
Stove TypeConvection Stove (Sauna Stone)
Capacity6people
A dry sauna equipped in the men’s large public bath, featuring a two-tier bench and a convection stove. The crisp, comfortable, authentic heat fills the room, allowing you to work up an astonishing amount of sweat efficiently from head to toe. The warmth from the sauna stones gently envelops your body and thoroughly melts away daily fatigue.
Sauna TypeSteam Sauna
Capacity6people
A luxurious mist sauna available only in the women’s large public bath. The temperature is set to be mild and gentle, and fine warm mist fills the room generously. Even if you are not fond of very hot saunas, you can enjoy a deep detox experience without feeling short of breath, while slowly moisturizing your whole body over time.
Water QualityTap Water
Capacity3people
A clean, well-chilled cold plunge bath installed only in the men’s large public bath. Set to an exquisite level of coldness, it refreshingly cools down the body heated by the dry sauna next door, all the way through. After entering, a pleasant chill envelops the body and heightens anticipation for outdoor bathing.
Closed Days: Open all year
〒047-0032 1-3-13 Inaho, Otaru, Hokkaido
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