Wakana-san's place is located in a quiet residential area. It is close to the metro station and the neighbourhood is safe late at night. The room Wakana-san provided was quite spacious (in Tokyo standard) and the host paid great effort to ensure my stay was comfortable. It was a pity that I only learnt on my last day of stay that Wakana-san was also experienced in floral arrangement. I will likely return to her place (and join her workshop, which is also listed on Airbnb) when I visit Tokyo again.