Jan himself was a nice host, but the apartment was very basic. The bedsheets provided were not meant for tall people, the towels provided were basically dish towels, and one of the beds was very uncomfortable. Heating was a bit spotty as well.
The apartment was in a great location and nearby a lot of great restaurants and pubs. Most of the sites in Prague were within walking distance! The central location was the best aspect of the apartment.
Jan also provided transport (for a charge) to and from the airport.