Perfect location to stay in Shinjuku! It is very close to Shin-Okubo station and less than a 5 minute walk from Okubo station where you should be able to navigate to any part of Tokyo through these two stations.
Had all the amenities to feel right at home. If you are a westerner that is tall please be aware this is a true Tokyo apartment. It is a small space with low ceilings so please be careful.
Shunki was very thorough in letting me know exactly what to expect and how to navigate my stay. I was more than comfortable reaching out if I had any questions. I would definitely stay here next time I am in Shinjuku!