My stay was wonderful. I was in Tokyo for my work and staying there for 14 days, and for that, the location was perfect - close to the major subway/JR stations with a lot of convenience store options (if you want to do Amazon delivery, you can send the package to the downstairs Lawson, and you can pick them up anytime), Kinko's, cafes, postal office, grocery stores etc.. (and Shinjuku area has a lot of free-wifi options). Also, despite being located near Shinjuku downtown, it was very quiet at night.
Ryan and Yu were very responsible and helpful hosts.
I would definitely stay here again! Thank you very much!