This is an excellent location, (on the Mound, just next to a castle!) literally steps away from shops and restaurants. The view is breathtaking and the floor to ceiling windows do an amazing job of showing off the city. The apartment is just one floor up (no lift) and we never heard any neighbors and minimal street noise from outside the bathroom. I stayed here with my wife, our friend, and our 10month old. (They provided a pack and play as well.) The apartment is spacious and clean and the beds are comfortable. The water pressure in the shower was also good.
We had issues with the heat and hot water during our 3.5 day stay, but it wasn't really in the hosts' control. We communicated often with the property management office to try and resolve the issue and eventually were compensated for the inconvenience.
It was easy to navigate around the city and have this location as our home base. Because our son was fussy one night, we went downstairs and next door for dinner at Mash Bar which was wonderfully convenient. We quite enjoyed Edinburgh and would stay here again. Thanks Greg & Jo!