I stayed in their female dorms at osaka hiroshima and fukuoka. Very clean. The osaka one is very big - can go to the lvl 6 to watch tv if downstairs is too noisy for u. And is walking distance from all those branded stores and dotonburi and etc. However the hiroshima one is a squeeze when I stayed in their dorm as the toilet/shower is in e room but near to jr station.
Didn't get to stay at Kyoto one coz fully booked.
If u stay in their chain of hostels, can accumulate stamps for rebate.