Pros: location is conveniently near major station (Shinjuku), great communication with the host including a welcome guide that has step-by-step (with pictures) instructions on how to find the place, easy to get to from
Narita airport while jet lagged, comfortable bed, hot shower with great water pressure, easy check in and out, and not least, the sweet welcome note and gifts from Ohkubo.
Cons: mainly one, that the apartment smelled of cigarette smoke when we arrived. It's against the house rules to smoke but someone had. disrespectful to the host but also not great for guests. We aired out the room and it improved over a day.