
Photo: Photographed by Qurren (talk), with IXY Digital 10 compact digital camera. · CC BY-SA 3.0 · Wikimedia Commons
Kidoike Onsen is a hot spring town in Nagano, Japan. The water leaves the ground at 42°C, hot. Officially the water is classed as simple spring. 1 inns take visitors here.
Mild and low in dissolved minerals. Usually clear and gentle on the skin, which is why these baths are often recommended for first-timers.
Many public baths still turn away visible tattoos, and the rule is set by each bath, not by the town. The reliable way round it is to bathe privately: a room with its own open-air bath, or an inn with a private bath you can book for yourselves.





Figures from the town's Japanese Wikipedia article.
Planning a first soak? Read how an onsen stay works, and what to do if you have tattoos.