Very comfortable apartment in a great, quiet neighborhood. Although quiet, there were plenty of pub/restaurant/grocery options within a block or two. 15 minute walk to the castle, etc.
The main living space is huge and comfortable. Big TV which we used to watch the BBC documentary on Mo Farah. Good water pressure and plenty of hot water. Coffee pods which made darn good coffee.
Parking is tight, but JustPark can solve that. I gave your host a reference that we used. Check with her.
Overall, a wonderful place to stay while in Edinburgh. We would definitely stay here again.