The flat is a nice, welcoming space in a very convenient part of the city. The facilities are very good, including TV and high speed internet. Also, the bed is extremely comfortable.
The only downsides to note are that the bathroom is very small and the heating is on a timer, and therefore takes a while to heat up. This should only be a problem in Winter when the outside temperature drops to around zero.
A couple of reviews comment on the musty smell in the building. As someone from Edinburgh, I can say that this is typical of all tenement buildings in the city.