The apartment is situated in a nice area, close to the center and the tourist spots, but not that close to be noisy.
The people at the agency that take care of these apartments (Ruterra Apartments) were really helpful with our requests. We were 3 people surprising a friend for her birthday on her Prague visit. The agency did all that we asked in order for our friend to be surprised.
The thing is with this apartment that it's got hot water issues. Meaning that you might not have any. We had to ask twice for help. And when help finally came, the water got warm, not hot.
Also, some of the outlets in the apartment are very old, with their covers broken completely and fallen form the wall. Unusable and unsafe.
The kitchen window doesn't close completely and some of the shutters are stuck in their place, leaving you with a bright windows in the early hours of the morning.
Overall the apartment is OK if you just plan to sleep there, but I would choose another place next time.