That was just great! Martin's friend Petr met us on the entering day, explaining everything with a friendly way! There was everything in the apartment that is usually needed . Very clean and comfortable stay. Placed near to a nice mall and metro station. Quite near to the city center , approximately 15 min of walking. During the stay there ware few questions for us to ask to Martin. We get fast and full answers.
Thanks a lot, guys! Next time in Prague we know where to live :)