Best AirBnb experience I've had. Can't say enough about how great Simon and Anna's flat was. Incredible location in the heart of Grassmarket with castle views from the courtyard of their building. We didn't use public transportation except for going to the airport - everywhere we went was within a 30 minute walk of the flat. The flat was very clean with great amenities (e.g. washer/dryer, universal power adaptors). One of the most comfortable beds I've slept in too. Simon and Anna gave prompt and helpful responses to all our questions before the trip.