Staying at Keiko's apartment was perfect. The apartment is very clean and had everything we need. The apartment can fit 4-5 peoples perfectly. If you have kids who love running, this apartment have a plenty of space for that ;) There is 24-h convenience store just across the road. The metro station is just few steps from the apartment, make it suitable if you come to Japan with parents and s space to others if you want to find a place to stay in Tokyo :)