Petrea's apartment is a great place to see Edinburgh from; it's well equipped with beautiful views and plenty of space. My sister and I had a great time there and were very comfortable. We walked into the city centre every day and it never took more than 20 minutes. Petrea was incredibly helpful and understanding when our flight was delayed on arrival and caused us to check in late, and both her and her husband (who met us at check in) continued to be brilliantly helpful when we arrived - offering to take us to get some milk so we could have a cup of tea, despite us being so late! In short, it was a great base from which to explore for our three nights in the city and I would highly recommend it.