Stayed here for my first week in Japan.
First and foremost, the place is tiny. The layout works given the size constraint but there is not much wiggle room.
The shower is a bit finnicky, with the temperature fluctuating between hot and cold. Also heed the warning about adjusting the temperature before entering! Go a little colder than you normally would, as the temperature will heat up.
The vicinity to Kanda station is really nice. You can get on the JR and Tokyo Metro from a short walk.