Josef’s place is wonderful place for your stay in Prague! In my opinion, the flat was in the best part of Prague: it is located on the side of the castle, which I prefer to the much busier and more touristy side where you find old town square. You are close to great restaurants and shops. Not too far from the castle and Lennon wall.
The apartment was very nice and clean. Comfortable kind size bed. Plenty on space in all of the rooms. Elevator and stairs in the building. The building itself is very safe and secure; two door codes to go through during off hours.
Josef was very responsive and quick to respond. He checked in on us during our stay to make sure we had everything we needed.
I would highly recommend this flat for your time in Prague, it was one of the best I’ve stayed in!