We stayed here for 5 days... It's a nice quiet place in a pretty setting along the Water of Leith, with not a bad walk into the New Town area (Old Town is a fairly long walk, but doable if you don't mind hills).
The building is a little worn, but the flat itself is quite nice, roomy and comfortable, with a well outfitted kitchen.
Barry sent very clear check-in and check-out instructions and had timely and quick communication.