Catherine was wonderful. She left us detailed instructions for how to access the apartment and was in touch with us through the night while our flight was delayed. The apartment was in great condition and looked just like the pictures. The beds were comfortable and the internet worked most of the time, but went out during our last day. Location wise, the apartment was about a 5 min walk from the Royal Mile and about a 20 min walk from Edinburgh castle. Its also very close to Arthur's Seat (prob 10-15 walk). We had a great time and would definitely recommend staying here.