Kei's place is great value for money and is in an excellent area - plenty of local shops and restaurants , many with English menus. There is a Jonathan's 10 mins walk away
too.
It is small - just one room - but has a comfortable bed, good shower , washing machine and toilet. Good for solo travellers. The portable wi - fi is a great bonus.
The location is fine - 15/ 20 minutes from Shinjuku.
Check the address on Google maps - it is very close to the station - turn left and go straight to the end of the road - across the crossing and it's behind the noodle shop and opposite a Curry house.
I'd definitely recommend it - I stayed for 20 nights and used it as a base for touring further afield.