Photo: Opqr · CC BY-SA 4.0 · Wikimedia Commons
越前玉川温泉 is a hot spring town in Fukui, Japan. The water leaves the ground at 27°C, cool enough that the baths here are usually reheated. Officially the water is classed as simple spring.
Mild and low in dissolved minerals. Usually clear and gentle on the skin, which is why these baths are often recommended for first-timers.
Figures from the town's Japanese Wikipedia article.
35.9675, 135.9691 — open the map
Planning a first soak? Read how an onsen stay works, and what to do if you have tattoos.