I stayed in William's apartment for almost 4 months during a semester abroad at Edinburgh Napier. It is situated in a perfect location in Edinburgh's beautiful Morningside area, with supermarkets, post office, banks, GP, takeaways and many other shops in the same street, and a bus stop right outside the door with lots of quick connections to the city centre and Napier University.
The room itself is very spacious and comfortable with a large bed, TV and desk - the entire apartment is well-kept, comfy and equipped with everything needed.
William is a nice, attentive host, and his two Spanish flatmates are lovely, too.
I highly recommend this accommodation.