We stayed in Edinburgh for a couple of days and chose to stay in Patrick's guest room.
The room was very pleasant: the size was adequate, the room and private bathroom were very clean, the bed was comfy.
Patrick is a superb host, who was quick to reply to any of our requests/messages, which made stay super convenient.
The location of his flat is very central, near the Oldtown but also the Newtown of Edinburgh. We could easily walk everywhere (many of the sights are in walking distance).
We would definitely recommend staying with Patrick!