The place is amazing. Clean, fully equipped and most of all cheap for what it offers. The location is secure, you can only get in through a reception. The fact that it offers a parking spot in the underground parking of the block makes this a 5* place to stay in Prague. It's easy to get to the city center from the apartment, there is a tram station in front of it and a metro station 5-10 min by foot. Matyas is a great host. He quickly response to messages and is very helpful.
I definitely recommend this place to stay at when you visit Prague.