Fantastic flat in brilliant location. Had everything that we needed, I was travelling with my mum, my teenage daughter and 1 year old daughter it fitted all our needs. Check in was simple and Mary was able to accommodate a slightly earlier check in time for me which was a great help. One note would be that it is no longer a gift shop underneath the stairs, it is an ice cream shop. I told my daughter to look for the gift shop across from the hostel, she walked past it, that could have been a teenage thing though!
Even though you are in the heart of the bustle of the royal mile area the flat was lovely and quiet. Do your parking research too. NCP car park can be expensive but if you sign up with them you can often get deals which will make it cheaper. If I am ever in need of a flat in Edinburgh again, I will definitely be checking to see if here is available.