I came here with high expectations since this was listed as the #1 best onsen in Tokyo on some site. Much to my disappointment, the facilities are average though there are ~7 pools at the female side. I think that the temperature of the pools don't tally with the temperature of the water, and I feel that the water is not really clean... It's also a little noisy with children running around too. However, lots of local come here so I believe that there must be a virtue in this place.