I spent 3.5 weeks in Steven and Clair's AirBnB in Shinjuku/Shin-Okubo and had great time there. The location is great for exploring the area and still calm and quiet at night. You can easily walk to central Shinjuku, see Shin-Okubo (little Seoul) - and for anyone liking longer walks: Shibuya is only and hour by foot which comes in handy if you missed the last train ;-) I have no critics and would definitely choose the AirBnB again and recommend it to friends!