We had a slight issue finding the building to begin with but that is out fault for not having any WiFi connection to Google Map it. It is actually very close to a 7/11 and the local train station too.
We walked to Shinjuku and it was a lovely walk full of cherry blossoms and cute side streets.
The room was smaller than I expected but as we were only here for two nights it really was not much of an issue.
Definitely would recommend for a short stay