Pretty nice place overall, I stayed in Hotel Sunshine with my buds and had dinner, breakfast, and went to the onsen there. The hotel itself was pretty nice with a swath of activities in mind to keep yourself or your kids busy, such as an arcade with a manga corner, all of them are in Japanese however. A table tennis room you can rent out for 50 minutes, a massage parlor, as well as the onsen's themself. The onsen itself was spectacular, and was an extremely relaxing and pleasant experience, you could either use a public or private onsen, although the private onsen will cost more and have to be reserved at the hotel itself. For Kinugawa Onsen itself, the place is home to many activities such as a theme park themed after replicating a somewhat accurate representation of life during the Edo period, as well as a ropaway you could use to give you an incredibly scenic view of the area.