We stayed for 4 nights at Marks flat. It is in a great location around 20 mins walk into central Edinburgh. The flat is on the second floor it is a large flat with two big double bedrooms and a big lounge with a dining table. The beds were ultra comfy and there was storage space galore in both rooms.
Parking was easy and as described by Mark. We did all touristy things including the zoo which is less than 10 mins drive away. We did lots of walking but there are buses and cabs that service the area. Would definitely return to this flat one of the best we have stayed in.