Marek's apartment is very nice, cozy, quiet and clean, exactly as shown on photos. The location is just perfect in neighborhood of beautiful park with city view and in a short walking distance to centre and with a quick tram connection to Prague castle and all major sightseeings (Charles Bridge, Dancing House,...). We also enjoyed restaurants nearby - we loved most "Zelená zahrada" restaurant ("Green Garden") which is just two streets away.
Marek is a kind host always ready to help if needed. Since he lives in the same house he can always provide guests with some extra amenities, e.g. hair dryer.
When you go to Prague for couple of days or even longer I would strongly recommend this apartment to everyone!