My wife and I really enjoyed our stay at Duncan and Daniela's place! Just minutes from the Waverly train station and in the middle of the castle and Holyrood palace - this was a perfect base to explore Old Town, and, being so near to the bridge across to New Town, the perfect base for pretty much most things!
The house is also kept in great condition, and there were so many small touches like fruit, tea, laundry stuff, so that it really did feel like home the whole time we were staying there. Wouldn't have wanted to stay anywhere else!
Daniela has some great food recommendations so be sure to check in with her, whatever it is you want to eat :) my wife and I can't wait to be back!