I spent 5 nights last August, as part of a stag event. The apartments were a fantastic base, and provided both excellent facilities, and fantastic comfort for a large group.
We were greeted at the airport and transported to the apartments (aprox 25 minute drive). The apartments were safe, and guarded with electronic doors.
The best feature was the location. Centre of Prague, seconds away from countless bars, restaurents and snack vendors. 1 minutes walk to the Tesco supermarket. Less than 10 minutes walk to Old Square, Wenceslas Square and Charles Bridge.
It was fantastic!