Mark's flat is insanely central in the old town of Edinburgh - you really are in the beating heart of the city but it's a fabulous quiet escape - up those steps and into peace and quiet in the large, light bedroom at the back where we slept like babies with the window open for 3 nights during the fringe.
Mark is a wonderful host, we very much enjoyed meeting him and he was very helpful. This place is a real find if you are visiting Edinburgh- highly recommended.