I highly recommend Colin and Sheena’s house. Everything is immaculately clean and comfortable. The bedroom is spacious and includes a sofa; the shower must be one of the best in Edinburgh!
C and S are ‘proper’ AirBnB hosts, doing it from love rather than profit.
As long as you’re not needing to return during the day, the location is absolutely fine for central Edinburgh. There’s a very easy bus which takes around 20mins (and runs late at night).
Recommended!