The apartment is in an old beautiful house (that seems like a castle itself, frankly). The location is brilliant, on the Royal Mile, just a 3-5 minute walk to the Edinburgh castle.
Paul described how to find the apartment and how to check in a very detailed way, which was then very easy to find.
The apartment is on the 5th floor, but don't be scared. I was travelling with my 77-year-old nan and she could go up quite quickly.
There is everything you need in the apartment, it's very convenient and Paul left us some things for breakfast, which was very nice, since we arrived late and all the shops were already closed :)
We asked to leave our bags after we had checked out (thanks Paul for that), so we got to enjoy Edinburgh for longer and free from carrying things around!
We highly recommend Paul's place to everyone!