Thank you Oleg and Miriam, we really loved our stay!
The apartment is great, a perfect size for a couple, the location is quite good, close to metro and tram stop and around 10 minutes to old town. There are supermarket and a place to have a beer close to the flat. The hosts are very communicative and helpfull, always answer quickly.
Me and my girlfriend really enjoyed our stay and would like to comeback to Prague and we would probably stay in Oleg and Miriam's flat again!