It was an excellent experience staying at Masami's place! She provided detailed directions to her apartment with pictures so it was very easy to get to. The apartment was in a safe neighborhood, kept clean, and very spacious for Japanese standards. The location is excellent, it is close to the station and only couple stops away from Shinjuku so I was able to explore the city even when I got in at midnight. I definitely recommend this place, I hope to stay here again when I visit Tokyo next time.