I brought my family to Edinburgh for 3 nights during the October School holidays. The apartment was easy to find due to clear instructions and accessed via a lift.
It is large and roomy with very little street noise due to triple glazing. It was clean and basic with furnishings more functional than comfortable. It reminded me of furnished student accommodation which I guess is the whole point when it is used solely for letting out.
The only thing we didn't like was its close proximity to Hunter square which was a congregating place for people with alcohol issues. Ok if I was with friends but more awkward when ushering children through the throng. We witnessed several arguments in passing.....one of which involved 3 police cars and a police van. I don't think there's much that can be done but would bare this in mind in future.
It is also just a few doors away from a brothel/ sauna which would have put me off had I known.
To summarise.....a basic well located apartment that does what it says on the tin. I would stay there again, just not with the children.