I stayed in the dorm. It is excellent value for money. Very clean, simple, beautiful. Everything worked perfectly.
When booking, please bear in mind that there are no hosts/staff on site (at least I didn’t see any.) Some people prefer this hands off approach, but when I arrived for my first day in japan, and the airport lost my bag and all my clothes (obviously not my host’s fault!) I could have done with some local advice/support.
Aside from that small thing, this place is elegant, simple, clean, and is also in a great location. Highly recommended.