This apartment just 17 minutes by train from Shinjuku, first of all we had confused with the line, and so we go with taxi to get there.
If you want to go by train from shinjuku, you should find JR yamanote line (platform 15) then go to Takadanobaba stasiun, it’s about 2 station from Shinjuku (fare ¥140). In Takadanobaba you should transit and find “Sheibu Shinjuku line” (Takadanobaba = SS 02) train which is different company with JR the go to Iogi station (SS 11). In Iogi station just find North exit with elevator, the apartment just opposite station (beside supermarket and in front of seven eleven).
The room is on 2nd floor, so you need to carry your luggage with extra power to upstairs.
Beside the apartment is a big Supermarket, we love to buy food from there.
The apartment is full amenities, you can cook and even wash your shirt.