We had a great time in Caroline's appartment. It is cosy, warm (especially welcome in winter!), very nicely decorated in Vienna style, charming and clean. Bed is comfortable and the flat extremely quiet - beware not to oversleep! Charming little attention, two 'Mozartkugel' were waiting for us in the kitchen ;) Paul arranged taxis for us, and was always very quick to react. He was waiting for us upon our late arrival, showed us the apartment around and answered all our questions. Location is great, with a metro station and tramways stops a few minutes from the flat. We'll be back !