Kofumi's place was very cosy and home-like. It really felt like we were living at a tiny studio flat in Tokyo, which added authenticity to our experience. The location is fantastic, we could walk to Shinjuku and Golden Gai and enjoy the night without thinking of transportation to get back home. The nearest station is a JR station, which is very valuable for JR pass holders. Also, since we were going to the Ghibli studio museum, it was a plus to be on the same line as Mitaka!
Kofumi was very responsive and gave us a lot of tips as well, which was very much like the odl days when Airbnb was all about the locals giving you tips as well as accommodation. I would definitely consider staying there again on my next trip to Tokyo!