I stayed in this place for more than 2 months. This place is in a very good location. It’s only few minutes walk from the Korean town (Okubo). There are a lot of restaurants and super markets around.
Access:
+ Higashi Shinjuku Station 2-3 min walk
+ Okubo/Shin-Okubo Station 10 min walk
+ Shinjuku Station 17 min walk
+ Waseda station 18 min walk
Overall:
The place has almost all necessary items you need for a long stay. Only concern is that it is quite small & Max 2 person can stay.