Amazing location. Within walking distance to everything. It's just around the corner from Grassmarket, and a few flights of stairs from the castle. Entrance was private as its in a kind of alley. The bathroom was awesome, spacious and had an actual tub! We only stayed the one night and left early in the morning for the airport, but Martin was friendly and accommodating. He even stored our luggage overnight while we went on a tour to Inverness before our stay.