The apartment was very nice. Clean, cosy, lots of light. We didn't get to meet Christian himself but he was always available online, gave directions and other info. His girlfriend who greeted us was very sweet and helpful too and also stayed available for any questions or requests. The check-out hour was convenient. We liked the neighborhood a lot. It is 2 steps to the Shonbrunn palace (and a fantastic park!) and metro. Overall was a great experience.