Christian is absolutely perfect host! His apartment is situated wonderfully lucky for tourist - 3 min by walk to the city center (nearest landmark is Vienna Opera), 1 min by walk to the underground station Karlsplatz, 4 min by walk to the cheapest garage place in Vienna - Karlsplatzgarage. Room was clean and fully equiped, Christian's responses of our questions were fast and effective. He provided to us a baby cot for our son(in a pretty good condition), and additional folding bed for my mom too! (she decided to join our trip spontaneously when we booked a room for 2 people and 1 child and we couldn't cancel our booking). When we return to Vienna we surely would book Christian's apartment again.) Thank you Christian!