We didn't get to see much of Florian on our visit but he was always friendly and helpful, full of great tips about where to eat in Vienna and how to get around. His home is spacious and cool (an important consideration in 35° August heat), and is located in a quiet, clean and picturesque part of town. Vienna's beautiful old city centre is in easy walking distance, and there is a bus stop and underground station just nearby for accessing the rest of the city. I highly recommend staying with Florian for your trip to Vienna!