When we arrived we were met by David, a friend of Jan who also has an apartment with Airbnb. He was really friendly and showed us where all the things were that we would need. He also responded to any queries we had throughout our time in Prague.
The Apartment was perfect for our 3 day stay and right on Wenceslas square which was great. Also a walk-able distance from the Old town. Jan also left us some maps and leaflets of things to do which was very handy!
The only downside I can find is that the apartment is on a busy road and you can hear it through the night. This did not affect our stay.