We enjoyed our stay in Prague. The best part about the apartment is its location! It apartment is ideally located because we walked to everything! The only time we toon public transportation was from the airport. There is a supermarket in the plaza across the street and many restauants within a few minutes walk. The apartment was clean and was big enough for 4 of us--plenty of storahe space for your belongings. The kitchen has basic necessities; we were able to cook simple meals. The bedroom is quiet and the bed is comfortable. The living room has a pull out couch, and although the noise didn't bother our kids, it does overlook the street and noise does enter the living room. It wasn't often though.
Please note that check-ins after 8pm have an additional fee (20 Euros). This was made clear to us upon reserving, but I'm not sure if that was obvious before we booked. Just a helpful tip in case you miss the fine print!