I enjoyed staying at this Airbnb/hotel right in the Shinjuku area.
It is just 8-minutes walking distance from the Shin-Okubo train station along the JR line, and one train stop away from the major Shinjuku station hub for various transfers. I hadn't realized it before, but the hotel's location seems to be in a small Korea-town within the Shinjuku Tokyo district. There are many Korean restaurants and establishments to be found all close by. Felt very safe walking around at night since the streets are usually full of people. The hotel room itself is cozy, but for one or two people, it's a good size. The hotel is located on a quiet street, so the evenings are peaceful. The self check-in process was super easy and Airi was very responsive. The room was on the second floor, and there is a stairway + an elevator to take you upstairs. The photos are accurate. I would recommend this Airbnb for those who want to stay in a central location within Tokyo.