The room is small and if you are fine with that it’s definitely great. But I would rather recommend the room for one person. One reason is the shower directly next to the kitchen. So if you are traveling with someone, make sure you are pretty close. Another reason is the missing space to put away the luggage. The location though is in a super spot. You can walk easily to Akihabara and Asakusa.
The mattress is pretty hard, which isn’t that much a problem, but it’s old so the elastic springs could be felt easily and it was difficult to find a comfortable sleeping position sometimes.
During my stay the neighbors were pretty loud. I could here them scream and fight a lot also in the middle of the night. So be aware that the walls are pretty thin.
Still I was pretty satisfied with the room and I would stay there again.