Filip and Ivona were not in Prague when we stayed at their apartment, but a friend of them provided us with the key. She was very nice and easy to communicate with, so check-in and -out was without problems.
The apartment was clean, spacious and functional. The location is very central and well connected. The apartment is on the fifth floor and while there is a lift, one should know that its very small, so you can't use it with a bigger stroller (something to keep in mind for families with smaller children).
Overall we enjoyed our stay and would recommend it!