We had a wonderful stay in Prague, the apartment is extremely well located, next to everything and in a really lovely place. The hosts are very nice, welcoming and everything went fine with them.
Though, it seems important to mention that the apartment was not clean when we arrived, lots of dust, bed sheets still wet and a candy paper on the bedroom floor. Plus the "room" fort the toilet and shower is surprising, there is only a blurry window so better be comfortable with the person you travel with.
Overall its enjoyable and not expensive, just minor things diminishing the place. But the rest is more important.
Still a thank you for Ondra and Petr!