Apt was super clean, nice and modern. Daniel has various Prague traveling guides in the apartment to help with roaming the city, directions on how to operate different items in the apartment (believe it or not, sometimes little things like a washer or satellite TV need a quick tutorial), and the place is was very modern.
The location is EXTREMELY convenient for getting to Old Town. All the good sites and nightlife experiences were within a max 20 minute walking distance. The castle was the only time we took a tram.
There were also some forms that needed to be filled out which we had some problems with. Daniel dropped off the forms for us and even after we filled them out wrong, offered to drop them off again to us. Communication was great, and if I ever went back to Prague I would stay at this apartment again.