The location was the best thing... about 10 minutes walk to get to Old Town. The flat is located on a very nice zone, with a supermarket very near. The kitchen was very well equipped with microwave, oven, stove and fridge.
Just two negative things: doesn't have wifi and the tv only reads dvd's, doesn't have channels.
The flat was clean and had all the amenities that we needed. It was little but had everything that you need to visit Edinburgh.