The place is similar to the picture. It just needs some maintenance. For example, some lights were not working, and the blind in the bedroom was half broken, so the sun would wake you up early, and you don't really have privacy. Other than that, the room is in good size with a reasonable rate. Walkable distance to most of the place in Shinjuku. 6 mins to the closest subway exit, then 5 more mins walk underground walk from the exit to the actual station.
worst part: if you want to ask the host any questions, he is either very slow in response (weeks)or just ignore you. The check-in instructions were in Japanese, and I asked for an English version. The host ignored me for 2 weeks until I asked him again 2 days before checking in. Then I asked 2 more question: if the washer in the room had drying functions and if I can check in a bit early. No response at all. Not even a simple "NO"
Overall, it is a decent place to rent, but the worst host I have encountered in airbnb.