Catherine's place is super ideal and so close to the Royal Mile. It's located at the opposite end of the castle but has a coffee shop right across the street, free parking and super easy to walk to a lot of places. The most convenient thing I can say is that Catherine has a lock box which made things SO much easier on us because our schedule changed and I could have never met her at a decent hour to get keys. In fact, I honestly believe wholeheartedly that anyone who does Airbnb should have a lock box for the keys and she does! Her place is well appointed with extra towels, etc. There is a box on the kitchen counter that actually had converters/adapters in it which came in handy for my friend who left hers in the States. And, there are a ton of maps and things in there that could be helpful for people who stay there. I myself put the Hop On Hop Off bus brochure in there for future travellers. Catherine was awesome at communicating with me and always super fast. She even gave a reminder email at the end of our stay reminding us about check-out time and wishing us well. She's great! I would absolutely stay here again in a heartbeat!