We stayed in Edinburgh for 5 days, and Barry's apartment is really well located. Just 15 minutes by foot from the castle and the old town, near restaurants, pub, supermarket and a lot of facilities. The apartment was cozy, clean and well equipped with everything you might need. Also, Barry was really helpful when there was a problem with the heater, that was solved in no time thanks to him.
When we come back to Edinburgh I hope we can rebook this apartment for our staying.