Hot Plaza Asama

Asama Onsen public day-use bathhouse with a 90°C dry sauna, cold bath, indoor and outdoor hot-spring pools. Adult admission is ¥750 and the operator posts its current calendar. The public bath is in central Asama Onsen, with a lounge and free parking. Tickets cover the sauna and bathing facilities; the operator lists Tuesday as its regular closure.

10:00–24:00; last admission 23:00; Tuesday closed