Jinpyokaku Honte is located in Kambayashi Onsen, near to Yudanka in the Japanese Alps. It's just a short transfer from Yudanka Station, that can be reached from Nagano. It only takes 30 minutes to walk to see the 'Snow Monkeys' in Jigokudani Monkey Park.
Yudanka can easily be reached by train from Tokyo to Nagano, and then catching a further train on the Nagaden Nagano Line to Yudanka. Staff from Jinpyokaku will meet you at Yudanka Station for your short transfer to the ryokan.