My wife and I stayed at George's place during our time in Mykonos. The apartment itself is very clean and comfortable and George and Eirini were especially accommodating. They even picked up our luggage in the morning and held for us until our check-in time.
The apartment is large enough for a couple and maybe a third wheeler sleeping on the couch upstairs, or a kid. The air conditioner works very well in the living room upstairs, cold and crisp. My only complaint is that the cool air does not reach to the bedroom down below, so if you run hot at night and need AC, you may have trouble in the bedroom downstairs as there is no AC below.
While the location is central to everything we were looking for, it was a bit further from town than I had anticipated. It's approx. 15-20min downhill and makes for a nice walk during the day. However, in the evening -ladies- I wouldn't count on dressing up in a nice gown and making the walk to town. You will likely spend an extra 20€ / day getting a taxi to (10€) and from (10€) town like we did. The good thing is that getting a taxi was relatively easy in mid-September, I just called the local taxi and told them to pick us up and drop us off at Ibiscus Villas hotel directly across from George's place. Also, you can rent an ATV or Vespa from George and travel around that way. There is no Uber on the islands.
Lastly, this Airbnb is very close to the airport so you can hear the planes taking off pretty good. This wasn't a problem for my wife and I, but if you are a light sleeper you may want to consider a different area. The good thing is only a few planes take off from here per day.
The apartment is very nice, clean, and comfortable with George and Eirini as terrific hosts, I know you will enjoy your stay if the above details do not bother you.