Our stay at Jack's flat was great. As someone who's lived in Edinburgh for several years, I can say the location is probably the best there is for touring the city -- not only are you right on the Royal Mile, hardly a two-minute's walk from the Castle, but the other side of the building faces onto the Mound, with a lift inside, meaning you can skip half of the grueling hill from New Town into Old Town by taking the lift. It's brilliant. The flat was beautiful, incredible views over Princes Street Gardens, spotless, comfortable. Jack left us croissants and fruit for breakfast, and was very kind. Highly recommended.