We stayed for four nights in Ondrej's apartment and thoroughly enjoyed ourselves. The apartment is very centrally located, clean and quiet. Although it's a little dark and the kitchen and bathroom are quite basic, the apartment has an authentic vibe and is perfect for someone looking to experience the city. Added bonus: Ondrej is an absolute legend. He was incredibly helpful, providing us directions from both the airport and the main bus terminal, ordering us taxis and even printing off our bus tickets for us. The communication with him was very prompt and he was always very friendly and obliging. Thanks so much Ondrej for making our stay in Prague so enjoyable.