Kayo and Ryuta provided some helpful directions prior to my stay.
Ryuta greeted me on my arrival and allowed me to check-in early despite having arrived before the check-in time. Really friendly guy, and English wasn't much of a problem.
Just a minor point to note: while the room was cozy, the windows didn't seem like they could be opened, so it might get a little stuffy. But overall this wasn't much of an issue for me.