We stayed around 1 week in this apartment - 4 adults and a 2-year old. It was perfect for a family and we had everything we needed. Fast respond and show up for questions/problems. Location is great. 7-eleven, family mart and lawson is very near and supermarket in the basement at the station building. Otsuka station is only a 3 min. walk away. For us it was very convenient that Otsuka station is located on the Yamanote line which stops at all the major areas in Tokyo. We would stay here again :)