This hostel is great. The curtained bunks offer a good amount of privacy, and the bar area downstairs is a great place to read, have a snack, and meet people when the bar is open. The location next to the 7-Eleven is very handy.
Mayu, one of the hostel managers, is wonderful, and offered to help me try on a kimono, which was a very interesting experience!
This place is not too far from a good Tokyo Metro station, and very convenient as a base for seeing much of the city.