Had a very good stay at Manami's apartment. Even though I have not met Manami, communication was excellent, and she was very quick and precise in responding to any questions. The place is exactly as described on the website, and a little welcome snack and the offering of mobile Wi-Fi for in the city was great extra service. The mezzanine for sleeping is very cosy and comfortable. The apartment is small but was fine for me as solo traveller. Having a washing machine was very useful. It is well located about 10 minutes walk from the subway, which brings you into the central part of the city within 10 to 15 minutes. Koenji itself has many restaurants, bars and shops without being super busy and you can walk to Nakano in 15 minutes as well for more options. I would warmly recommend Manami's place as a base to explore Tokyo.