The Flat was clean, comfortable and nicely furnished. Located in a neighborhood, with all necessary facilities (shops, supermarket 24/7, cafes, restaurants, post office). Perhaps the flat is slightly smaller than it looks in the picture, but still big enough for 2 people. About 20 minutes walk from "Yoyogi-Uehara" the first Metro-Toei Line station (the closer "Hatagaya" station is a Keyo line private railways station, not included in our tourist subway 72hours tickets). However, the neighborhood is so beautiful that the walk to the station is very pleasant.
Only real defect may be the proximity to a very large elevated road, noisy day and night. For us it was not a problem and if needed they do provide ear plugs :-)
Although we have not met any of them, Yuka and his staff were very professional, always in touch via email and airbnb messages. They explained very well how to get to the house and enter the apartment. They even informed of the arrival of a typhoon teaching us on how to behave.
At the end we are very happy about our stay. Thanks to Yuka and her staff, we hope to return soon ;-)