Joanna's flat is great. Very comfortable; very nicely appointed; and very conveniently located to the Royal Mile and all that includes. Better yet, it's located in the Stockbridge neighborhood, a quiet, upscale area of shops and restaurants, very near the Botanical Gardens.
We didn't have a car, and walked all about, very comfortably (we discovered the 27 bus ran up and down Dundas Street, climbing up the hill to the National Gallery, thus avoiding the arduous trek).
Cowan and Sons just a few blocks from the flat, is a wonderful cafe for breakfast. The little pizza place on Wells Ave is also quite tasty.
The flat itself is really perfect for exploring the city and beyond.