Natural Hot Spring Bizan no Yu is located on the top floor (11th floor) of Hotel Sunroute Tokushima, a 1-minute walk from JR Tokushima Station. Day-use is available for non-guests. In addition to high-quality natural hot spring water gushing up from underground, what will impress sauna fans is the jar-shaped cold plunge bath and the open-air relaxation area in the outdoor space. Because there is no chiller, the water temperature changes with the seasons, but resting while looking down over Mt. Bizan and Tokushima city, and at night gazing at the starry sky, is exceptional.