Awesome hospitality from Petr, he was really doing his best to give us the best experience. Apartment is spacious, clean. Cozy bed and couch, place to work on a notebook, nice bathroom. Location is perfect - near a tram stop, which you don't really need as all can be reached out on foot easily. Metro and supermarket just 5 min away on foot and a few minutes out in the Letenské sady is the best view of Prague.
Thanks again, Petr!