Shohei-san's place is located about 5 min walk from Sasazuka station where you can get easily through both Keio & Keio new line from Shinjuku station (very short ride from Shinjuku station). There are family mart and local grocery store right next to the apartment. Shohei-san was very nice and super quick to my messages. I checked in & out super late due to my mistake, but Shohei-san was very understanding. If you're planning to venture out Shinjuku area, I highly recommend!