I stayed in ondrejs place for 4 nights with my girlfriend. We had a great time.
The location is amazing, on the old part of prague and in walking distance from every thing.
The apartment is small but is fine for a couple for short stays, the kitchen is also small but well equipped.
Because the apartment is so small there is no room for a closet but there are hangers for clothes and shoes.
The apartment is a part of a hostel and the hostel staff were very friendly and helpful, it is also possible to use the hostel amenities . The apartment is on the floor above the hostel so it is quiet and private.