We had a FABULOUS stay at Candlemaker Row. The location is unbeatable, in the middle of the Old Old town but also so convenient to the University of Edinburgh and all the major bus lines, a few meters away from Grassmarket, Victoria street and the Castle (which you can see from a corner of the west windows) and right in front of the National Museum of Scotland.
The apartment is more spacious than we thought, well organized and equipped with all you need, very bright and cozy - with the loveliest view on the old and charming Greyfriars' Kirkyard (right next to it), which I think adds an absolute plus to it.
There are plenty of restaurants and cafes nearby, especially on George IV Bridge and Forest road. It took us a little more than ten minutes to walk there from the train station and if you need a place to store your luggage ahead of check-in time there's a convenient Premier shop on Grassmarket that can hold it for your through the Stasher App. We had a little problem with the wifi connection but Andy was very helpful and available to resolve it the smoothest way possible for us.
We'll definitely make sure to book this unit next time we'll be in Edinburgh!