Watarase Onsen Hotel Sasayuri

The staff are incredibly hospitable and super friendly. They bend over backwards to help. I had half-board with dinner, the food is some of the best I've had in Japan, the variety and number of dishes is amazing. The bathes are really well presented, there's a number to choose from and the outdoor ones are bliss after a long day's hiking. Their shuttle bus is very accommodating as they picked me up and dropped me off, at varying locations, several times. Thanks again!

I didn't dislike anything. Do note that you shouldn't expect a spanking new and modern hotel - it's charming and has character. I think it seems popular with Japanese tourists which can only be a good thing, in my opinion.