My sister and I stayed at Ellies and Scotts beautiful place for almost 4 days and we felt like home in this wonderful appartment.
The flat is really close to a nice street with lots of restaurants and shops and other interesting areas (e.g. old town, the castle, pricess street) are within walking distance. We didn't use any public transportation while we were in Edinburgh (apart from the Bus to the airport which leaves 1 min away from the flat) and walked all routes by ourselves.
The flat is really lovely decorated, totally clean and leaves a lot of room if you just want to relax after a day of sightseeing.