we stayed at 3 airbnbs in edinburgh (our flight kept on getting pushed back) and he has the best place. he might not be smack dab in the center of the grassmarket but he is only a minutes' walk from everything and the amenities are amazing. he has, by far, the most complete amenities and there aren't that many stairs to navigate, for someon with huge suitcases, that is definitely a plus. there is also a splendid view of the castle on his floor. it is simple but not minimalistic in terms of comfort. One of the best bnbs out there.