The apartment is lovely and very spacious. It looks great in the pics but it's even nicer in real life. Has everything you would need.
Don't let the dark and dingy stairwell put you off, would be nice if that reflected how nice the apartment is though.
We had an issue with the en suite shower, it's not very straight forward how to turn it on and the handle is very stiff (felt like it may break if forced) . The water was scalding hot and the temperature control didn't work, couldn't use it really. We stayed in the master bedroom which is really nice and modern although the traffic noise is VERY loud which did wake us up a few times.
The location is good, around a 20min walk into the city centre. The area, and all of Edinburgh is very clean and the people are really nice and friendly we found. Looking forward to planning my next trip there. Dele replied to messages promptly and was very helpful.