This is a great location just one short stop from the busiest train station in the world which is Shinjuku. It’s actually walkable in the evenings when it is cooler (15 minutes). Less than 5 minute walk to the house (I’m a fast walker) from the train station located in Shin Okubun (aka Koreatown) with many restaurants and grocery shops). Staying in Shinjuku is like staying at Times Square in New York which I don’t recommend. Just too hustle and bustle and not ideal for rejuvenating especially in a big city like Tokyo.
Stairs are steep so be careful in navigating it at night. Otherwise spacious overall with three levels. Bathrooms are on the smaller side (this being Japan).