Hatunoyu Ryokan in Nagano Snow Monkey Park, Japan

There are 9 public baths on the street. Open from 6am to 10pm. All baths are for free for staying guests. Please take a key for those baths as they are automatically locked. The key is universal for 9 baths.
Local bus or taxi takes you to 'Jigokudani Monkey Park

(approx 10 mins by car, 1 hour on foot.)