The hosts of this apartment were very responsive to our questions. We even had a medical problem, but they helped us get a doctor appointment, told us how to get there, and even picked up the prescription for us. About as helpful a couple as you could ask for.
The apartment can get warm on hot days, but there are many fans you can use to stay cool. It is located a bit away from the center of Prague, but anything you could need is located in this quiet area. To get to the center is just one tram ride away. We enjoyed our stay very much.