I had a great stay at Andy's for two weeks on a work trip.
The place was ideal, on the doorstep of Blackford hill and the Royal Observatory, within walking distance of Morningside and a short bus trip to the city centre. The room is very big, large desk and a very comfortable bed. Lots of sunlight too with a view of Blackford hill. Finally, Andy is very laid back, friendly and accommodating - a great host.
Definitely recommend!