The room 4 in Ryans flat is very convenient and the location itself is perfect at Haymarket. Princess street with lots of shopping possibilities is in walking distance and the bus/tram to the airport is right in front of the door.
The whole concept of Ryans AirBnB concept is well thought through. You won't see him personally but the whole flat is equipped with little notes and tipps. Also the check-in and check-out is fully independent with a key box.