Decent place in Bunkyo City. As a home base it's pretty solid, makes most of the city quite accessible by subway, and the beds were fine. Room was pretty grungey smelling - stale cigarette stench hits you when you walk in, and they've used a lot of febreeze to cover it up, so if you're smell-sensitive, beware. Walls were also very thin - we could hear the person in the room beside us snoring, and even just the sounds of them moving around. Also, there was only one outlet in the room for two people, which isnt enough when you consider we at minimum had two phones and a pocket wi-fi to charge - I suspect many travelers who want to stay in this room will be in the same situation.
Towels are very small and we were only given one each. Men's bathroom tap didnt have any hot water, and there were no hand towels in either bathroom. Finally, this doesnt really have much of a "hostel" vibe despite the description, and the common room isn't really anywhere that people would want to hang out in; you won't be meeting your fellow travelers or anything.
Overall, totally a fine place if you're travelling on the cheap, but you get what you pay for.