Cluny's apartment is a good choice in Edinburgh. It is located in the center of the Old Town and you will find many restaurants and touristic spots just around the corner.
It is fully equipped and very clean. The big kitchen with its bench in front of the window is very tempting. Also the other rooms have a nice warm atmosphere. You just have to be a little sportive: there are 66 steps to get to the apartment:-)
I would chose this apartment again if I visit Edinburgh again.