We stayed at Sam's place over the Easter weekend. The entrance to the building is not the prettiest but don't be put off because the flat itself is very bright, pretty and stylish.
Location wise the flat is about 20 minute walk from Waverley station so it's in a good location to explore the city.
The flat is located right in front of a public park so it can be a bit noisy sometimes. Also, the boiler is located inside the room and is a bit noisy, so I would recommend taking sleeping earplugs if you are a light sleeper.
Overall, we enjoyed our stay and thought it was good value for money.