Great place to stay in with all the bars and cafes in easy walking distance. We walked everywhere from the flat. Very well equipped but not over fussy. Perfect for our weekend break.
The views of the castle are excellent and the square with the right amount of activity to get that buzz of the city. the bedroom at the rear of the building prevents to much disturbance.
I would definitely recommend a stay here if Edinburgh is your destination and you don't want the restrictions of a hotel.