I can't recommend the place enough! Great location. Katsushika is somehow off the beaten touristic track, but the nearby temple (Shibamata Taishakuten) is a must-see, hugely underrated. Whole neighborhood has a charming vintage atmosphere. The host is really communicative and interesting to talk to. He's fluent in English, but let me practice my Japanese on him too. The place attracts interesting guests, too. And if you want privacy, the beds have roller blinds, so you can just isolate yourself and forget you are in a shared room, as it feels like a private capsule. Also, the hostel is very affordable, yet you still get real butter for your tosts, rare treat in the land of margarine. 12/10, I hope to come back!