The listing is really beautifully designed and well-built. It can also accommodate a whole family or a group of friends travelling together. The location is also excellent as it is within walking distance to Shinjuku but situated in a quiet residential neighbourhood. The last plus point is that the Shinjuku Gyeon is barely 5 minutes' walk away. It's a beautiful park and generally quiet as it charges a 500 Yen entry.
The only negative thing about this listing is that the entire building is an Airbnb property with 4 -5 listings. The flooring, the walls and the windows are all very thin and not sound-proof at all. So, you will hear every single step taken by the guests upstairs. You will hear them dragging their luggage or the furnitures around in the listing above. You may even hear them talk, laugh or sing if they are having some fun. Something to be aware of if you are booking this place.