"Heiseikan Shiosaitei" is a luxury hot spring inn in Hakodate, Hokkaido, standing right on the shoreline of the Tsugaru Strait. The sauna room adjoining the observation public bath on the top 7th floor is a stadium-style sauna with lavish two-tier benches. Through the large windows, you can enjoy an exhilarating session while gazing at the dynamic open sea of the Tsugaru Strait spread out before you, as well as the horizon tinted by the setting sun. After the sauna, cool down in the single-person cold plunge bath. A soak in the open-air bath on the 4th floor overlooking a Japanese garden, or a bath in your room’s open-air bath with the sound of the waves as your pillow, is pure bliss.