Everything was perfect during our three nights stay: spotlessly clean apartment with functional floor plan, two minutes to subway but still perfectly quiet, all travel necessities are taken care of. Host shows attention to even tiny details: for instance, the entry door is painted yellow making it easy to find; there is a luggage scale to weight your stuff before going to the airport, plenty of locations to charge electronics, etc.
The apartment is easy to find and can be seen on Street View and similar services. The location is pretty good, less than 300 meters (2 min by walk) to Nishi Magome subway station; from there, it takes less than 10 min to get to Gotanda station, which is a good gateway to many destinations in Tokyo. Good and inexpensive access to both HND and NRT airports by subway.
The entire space is functional; even though the rooms are relatively small (this is Japan, after all), the available space is cleverly utilized making it appearing large than it is. It's a plenty of space for a couple and sufficient space for a family with two children. It might be a bit small for larger and/or mixed groups.
The kitchenette is small but, again, functional; we were able to cook our meals w/o problems.
Overall, we are pretty impressed with our stay at this property and will definitely stay again next time. Thanks!