Far away from much of anything is this gem of a supersento. Yu-an was in the featured section of one of the 2008 edition onsen magazines. Thank to an extended weekend holiday at my work years ago I rented a car and made the 1 hour drive to Miki to find this place. It was well worth the drive. I knew I was out of the city when I entered as shoe locker didn't require ¥100, nor did the girls working the front assign me a locker. I could take whatever one I wanted once in the changing room. The restaurant, massage, and warm stone sleeping areas all looked great, but the high point of this onsen was its brown, clay rich outdoor bath with TV. The TV was situated so that if you wanted to ignore it you wanted. I enjoyed watching the opening scene "Vertical Limit," a cheesy Hollywood film about rock climbers, while cooling off on a big boulder. Access is a bit hard by public transportation so driving there is recommended. Keep in mind that the sign showing the turn off to get there from Route 20 is very poorly lit. I recently returned and really enjoyed the extra hot bath.