We couldn't meet personally Anna and Simon as they were both working but Anna gave us all the info about how to get into the flat and where we could leave our bags before the check in.
The flat is small but very very nice, there is anything you need for the stay and very clean. Is located in a very central area in the old town (behind the castle) with many cafes and pubs nearby. Would definitely recommend this apartment to any couple looking to visit Edinburgh.