Yasu-San apartment in Shinjuku has a great location, very close to both Nakai or Ochiai station, big for Japanese standard, sleeps for up to 8pax easily, with 2 showers and 2 separate toilets. It is close to 3 convenience stores and a supermarket for all your daily needs especially for your night supper or craving or even ordering breakfast menu from McDonalds.
Very clean and complete apartment, great shower, and heating/AC, and responsive host. We stayed on first floor apartment, very convenient for mini group. Comfortable kitchen space to cook and right size of fridge. All instructions are very clear to understand. Recommended for stay here!