First and foremost I feel it is my duty to mention that Steven is a great host. He is a an extremely warm and friendly man who goes out of his way to make you feel welcome and at home. My tram was getting delayed due to the Edinburgh Festival and he actually drove down to pick me up from the tram stop at York Place. He even dropped me to the Waverly station before I returned. Apart from that the man seems to know every corner of the city.
The stay itself was really comfortable. The place sparkling clean. Comfortable bed, spacious bedroom, amazing bathroom and kitchen. Bus stop to city centre is close by or you can walk there (20 mins or so). The area is quiet as well. I'd definitely stay at Steven's apartment if I were in Edinburgh again.