I stayed at Simon's place with my parents and it was a pleasant experience. Communication with him was easy and clear. We requested to check-in earlier and were able to do so. Rooms are big and clean. There is an elevator, but one needs to take stairs to get to it. My parents have bad knees so that was the only unpleasant part of their stay. Apartment is at walking distance from castle Vysehrad and 15 min tram ride to city centre.