Norimasa san was a wonderful host, so friendly and welcoming, and gave us great recommendations for the Nakano area. The apartment was spotless and the location is really convenient. It was nice to be off the beaten track a bit! We enjoyed the tatami mats and the balcony. Note that there is some noise from the street (karaoke) but it didn't prevent us from sleeping (ear plugs are a good idea if you're a light sleeper like me).