3rd floor of an apartment. There is no elevator and the stairs are pretty narrow(which is completely understandable - it's in Tokyo!). So it can be hard for someone who has big suitcases.
It was clean besides the beds - there was some hair on the beds, and the blankets seemed a little bit worn after some time.
My husband and I appreciated that there was a grocery store right next to the apartment which opens until 11 pm. And nearest laundry(across the street) was open 24 hours. It was convenient to have both of them and they are close to us.
The only thing I would mention to other travellers would be that the nearest train station is a bit far - 13 mins by walk. However, there are local buses that are at a flat rate of 220 yen and that take you to Asakusa St. and Minowa St.
Overall, we enjoyed staying at the place as we could stay in a local side of town in Tokyo while you have convenient access to touristy towns.