The apartment was situated in an excellent location, just off Grassmarket and under the castle. Access to the main attractions was easy. Communication was good, with easy to follow instruction on how to find it, and how to gain entry. The apartment was spacious, clean and tidy, with everything that we needed. There was no street/neighbour noise at all, which allowed for a peaceful stay.
The only slight issue you may find is the shower. It is an 'over the bath' shower, but instead of the usual 'length ways' fitting, it is across the bath. I am 6'1" and regular build, but found it a little snug. I managed and there were no problems, but if you are of a large build, you will be tighter for space once the shower doors come round to form a cubicle with the door edges inside the bath.
Overall, this is an excellent, value for money apartment which I would recommend to you if you're looking for a place to stay in the centre of Edinburgh. Look no further, and book this one!