We had a lovely stay. The flat looked exactly like on the pictures and it is just a quick walk to the town centre. You can even see Calton Hill from the kitchen window.
The only downside, it was a bit cold downstairs, but warm and cosy upstairs where the bedroom is located. The bedroom is very big and you have a lot of space to put your belongings.
Check-in and check-out was also very easy. So in total: we would definitely stay there again.