The apartment was great, very comfortable, and stylish, the kitchen was well-equipped and had everything you need. It is also very centrally located and everything is just a few minutes away. The bathroom was very tiny but it is not really a problem.
The hosts were unresponsive a couple of times (including the day before arrival) and the Internet speed was very average (if like me you have work to do). But in general, it is a nice place to stay in Edinburgh!