The apartment is very near the Chidoricho station (part of the Ikegami train line, NOT covered by the JR pass) and there are more than 3 supermarkets/konbinis in a 2 block radius.
The room is small but we didn't expect to get a bigger room in Tokyo for such a price.
The bathroom is pretty big, though, and the beds are comfy.
A nice touch was the electronic locks at the main door and at the room itself, since we didn't have to carry a key all the time, we just had to remember the codes.