Roy is a great host, very friendly and helpful. Being an experienced traveller himself - and an active sports fan on top of it - you will certainly find many occasions to enter interesting discussion with him - day or night ;-).
His rooms are very tidy, you can share the kitchen and the bathroom hosts a fancy shower. The flat is central and the bus connection right into Royal Mile ideal. If you are heading to the airport, allow enough time for the journey though. The tram from York Place is convenient but quite sluggish....
I truly enjoyed my stay at Roy's and would go back to Edinburgh tomorrow - if only I could ;-)