The best thing about Carol's flat was the location! It was right across the street from a pub and on the Royal Mile. It was about 10 min walk from Edinburgh Waverly station. We arrived in Edinburgh a few hours before check in, but Carol let us drop our suitcases off which was massively helpful. Because we were on the Royal Mile, we dropped off our bags and headed to the Grass Market area for lunch. It was great. The flat was clean and comfy for all 5 of us. We all had a place to sleep and Carol left us some tea and Scottish biscuits - a perfect touch.
The only thing we weren't aware of was it's a bit echoy in the apartment building so while we were inside the flat we could hear people going up and down the stairs outside the door. This didn't bother us though, just something to be aware of if you are looking for a really quiet place (being on the Royal Mile is obviously going to be a bit louder as well).
Overall, it was an amazing home and we LOVED our time in Edinburgh. Carol's home made it all the better.