Karolina's place was fantastic. Nice apartment in a great part of the city. It was nice and clean - exactly what we hoped for. Our host (Martin) was awesome. He was in communication with us from the time of the reservation and even met us at the apartment when we arrived on our trip from Prague, just to make sure we found the place OK and got in without issue. I highly recommend that you stay at Karolina's place when you visit Prague.