This is a beautiful place to stay for a few days – or longer! It's an old appartement, nicely furnished and you will find everything you need.
We especially enjoyed that the flat is located in a neighbourhood outside the busy center. Walk to the metro about 10 minutes, probably less, then a few stops to whereever you want to go (public transport in Prague is awesome.) Next to the metro there's a big shopping mall – not romantic, but optimal for buying all kinds of things.
I liked that the house is gated – I don't think it's at all needed from a security point of view but it gave a special secluded feeling I enjoyed. There's a little steakhouse right across the street from the appartement (worth a visit) and a few kiosk in the area. Flat goes to the street but the neighborhood is more on the quiet side we found – we had no issues sleeping with the window open.
Communication with Martin and Petr was very good. We might visit again!