We stayed at Kiki's place recently and we were a family of 5 adults and an infant. We found the accomodation very spacious for Tokyo standards and provided what we needed for our stay. It was located close to 2 subways which allowed us to explore Tokyo quite easily and the party hub of Shinjuku. Also Family Mart and 7-Eleven was in walking distance. I would recommend Kiki's place to anyone looking to stay in the Shinjuku area.