It is quiet. Lots of places to eat and easy to get to so many places. The train is about I minute walk. the actual address is
1-chome-12-20 okubo, shinjuku city, Tokyo 169-0072. I'm not sure what those other addresses were, a bilingual tourism official took forever finding the addeess until i showed her the house placard. there will be a restaurant in front of the alleyway of the apartment that has a giant chandelier in the window. The space is small, I wouldn't book more than 2 people. the pocket wifi they provide is amazing and works all over with no issues at all. I did have issues with the ac, both nights I used it, I woke with a sore throat, stopped using it and it went away. might need cleaning. besides that, host was good, the place has everything you'd need. I would add that it's easier to use the local laundry mat down the street. it does a much better job for 100 yen.