Petr's apartment was great. It was by far the largest apt we stayed in throughout Europe for this price range. It was spotlessly clean, and Petr had equipped it with lots of things that make it comfortable while travelling, including a washing machine. The apartment was nearby a beautiful park where all the locals seemed to gather after work and was within walking distance of many local restaurants. The area itself did not feel touristy at all, and we were also able to walk to the tourist attractions including Old Town Square, Charles Bridge, the Metronome etc (note we like walking and this was quite a long walk - Catching the underground to these places would be super quick).
Petr was great and helped us by suggesting local places to eat and helping us organise a cab to the bus station at the end of our stay. We had a fabulous time!