My family and I stayed here for 2 1/2 weeks while getting our son set up to start at the University of Edinburgh.
The flat is lovely and we could't have asked for a better location as it is right next to the main University campus and easy walking distance to the Royal Mile/Princes Street area, Arthurs Seat, train, tram, and bus locations, as well as grocery shopping, cafes, and restaurants. It is a spacious, clean, and very homey flat that comfortably fit a family of 4. We really enjoyed our stay here.
Justin was very welcoming, met us at the apartment when we arrived and helped with directions, places to go, things to do in and around the city. He was also very quick to respond to correspondence. I would highly recommend staying here.