The place it’s a typical studio you’ll find in Japan and Europe, and I loved it as a solo traveller. I saw some comments on the size: Americans, research in advance. Only in the US are things extra 😉
It’s very close yet in a quiet spot of shin-Okubo- the Korean area. It’s also one stop on the JR from Shinjuku. However, the apartments - at least 102/103- are on the ground floor, with windows overlooking the street. There are curtains, but they might not suit everyone’s liking.
The flat is well equipped with a job, microwave, kettle, pots and pans, etc.; the only thing is that the sink where you wash your teeth it’s the same as where you wash your dishes. Again, I didn’t have a problem with it, but I am saying it for transparency. The place it’s safe as there are two codes, one for the building and one for the apt. I loved the fact of not having a key. I would recommend it. Communication was easy. The walls are a bit thin, so if you are a light sleeper, bring earplugs.