I stayed here with four friends for about 11 days during the winter. We rented both rooms 402 and 403 so we had a total of 5 twin beds. The stay was comfortable, although we all ended up sleeping in the larger room (403) because there was a strong smell of cigarette smoke in the smaller room, plus the thin walls allowed us to hear the TV in the other room through most of the night which made it difficult to sleep. The heaters worked well to warm us up in the cold. I didn't complain about the smell of smoke because the other tenant's habits are out of the host's control. He's a pleasant man who helped us to figure out how to work the heater and take out the trash later on in our stay. The main issue we had with the place was the shower situation. The two shower rooms are located down the hall from the bedrooms in the kitchen. Guys might be a bit more comfortable with this, but for young women it was a bit uncomfortable to have to run back to the room in a towel after showering to avoid awkwardly running into the other tenant while he was out and about. Shin san obviously had this thought in mind before we checked in, as he did recommend a nearby bath house for us if we were uncomfortable with the layout (we didn't end up trying it but it was nice of him to tell us about it). He's a very attentive host! We got lost on our way to the apartment when we first arrived and even at 10 PM he was quick to reply and even called me to help us find our way. I would definitely stay in another place hosted by Shin san, but not this particular location mainly because of the smell and location of the showers. For our purposes though, it was okay. One doesn't go to Tokyo to stay holed up in their hotel/airbnb, so we hardly spent any time in the apartment at all. It's about a 7 minute walk from one of the metro stations and very close to a Family Mart which was super convenient.