Great location. The hosts were friendly and helpful. Both personal and electronic communication were quickly responded to. The unit has lots of useful information on train schedules to the airport and sites, as well as suggestions for the Sumida area. It was thoughtfully put together.
Our only issue was trying to get the pocket wifi to work. I think this had more to do with previous guest than with host. The SSID was changed, so check it on the unit, not just use name on the label. Even when that was figured out, it was very spotty, but we had our own, so we were OK. In the end, it was as mall issue for us. There is also wifi in the unit with a base router. The host also provided a charging station with all required wires.
Location is great as it is very close (within 10-15 minutes walking distance) to Skytree, Asakusa Senso-ji and trains to both airports.
The unit is also quite spacious by Tokyo standards.