Amazing location, right near the castle and close to the bus and tram lines. Walking distance to lots of great restaurants as well. Mark always responded quickly to any messages, and provided lots of information to make our stay better. The apartment was spacious, and there were so many towels provided we didn't use them all - a nice change from places that only give one per person. Just know that the apartment is on the second floor and there's no elevator, so be prepared to carry your bags up. But other than that, I would stay here again next time I'm in Edinburgh.