Kin no Yu Onsen

Tattoo friendly (I'm covered!) and a good mixture of tourists and locals. Staff at the entrance were so helpful in getting us booked in and guiding us through the process. Sweated my life away in the mineral waters and had a cold bottle of the Arima cider water afterwards - blissful

Verified tattoos okay. High mineral content water appears rusty-brownish (but called "gold" in Japanese). Many foreigners, they're used to us. One of two in Arima (other is Gin no Yu).

Small neighborhood Onsen, simple, very clean, quiet. Mainly practiced by locals. Two baths are with brown spring water. The first at 42 degrees Celsius, the second at 44 degrees (very hot). We enjoyed tasting an Arima sparkling water on the way out.

This is the best onsen, and by far the cheapest, the other ones are ridiculously overpriced, loved this onsen, very authentic and clean, extremely hot water in the hottest pool