We stayed at Catherine's place to attend the Edinburgh Festival Fringe. We weren't in the flat much at all but Catherine was fine about us coming home (very!) late.
The flat is really homely and close to a supermarket, pharmacy and good bars. Fringe location wise it is a stones throw away from Summerhall, and 10 minutes from Assembly/Underbelly George Sq, Gilded Balloon and Pleasance Potter Row. I'd say about 15 mins walk to the Royal Mile and Underbelly Cowgate/Pleasance Courtyard. It was perfect for us.
Shampoo, shower gel and conditioner was all provided. The bed is SO comfy, and the flat was brilliantly clean. The shared bathroom is gorgeous and our timetable conveniently didn't clash with other guests or Catherine when trying to use it. On arrival, our flight was delayed and Catherine waited for us to check us in personally. She was so enthusiastic, friendly and clear.
If you're a light sleeper, there isn't double glazed windows and you're on a main bus route street, but the view of Arthur's Seat is breathtaking! It didn't bother us at all.
Would highly recommend Catherine's place to stay.