Den's flat is in a great localization, close to the centre and just 5 minutes to the Holyrood Palace and Arthur Seat. We came to Edinburgh mainly to enjoy the Fringe Festival and the flat is really close to several Fringe venues. The are also various restaurant and pubs not too far away. Den wasn't in when we arrived, but the check-in instructions he left were spot on and easy to follow.
The household is shared, and there were other AirBnB users while we were in, which led to needing some coordination in using the bathroom on the first day, but next days were ok. Den is a really nice host and it's too bad we only met him on the last day of our stay there.