Really nice flat, in a good, central location. Well stocked with cooking utensils etc if that's what you're looking for. Well suited for exploring the city centre, and Fringe venues. We walked everywhere, including too and from the station, so it's a very handy place to base yourself.
The flat was perfectly clean upon arrival, and maps/guides available. The bed and sofa bed were both comfortable, and although there is noise at night from the nearby bars, this wasn't a particular problem.
The information given before you arrive is clear and the check in process was very straight forwards. Communications were great throughout. All in all, a very enjoyable and easy couple of days away!