We had a very pleasant stay in Vienna. The Airbnb was located within 1 minutes walking distance to the metro with trains arriving every 4 minutes around the city which made getting around very convenient. The apartment was well lit and spacious with all our basic needs. Just be aware if you are staying with more than one guest that there is only one pillow and one small blanket.
We did not meet the hosts as we were checked in by their friend Johann who was lovely. I found getting in touch with our hosts very hard. I had three queries concerning how to operate the washing machine, food, checkout etc which all went unanswered so we couldn't get any washing done. Also when we arrived the dishwasher was still full of dirty dishes and the bin was full and had not been emptied.
But other than that we had a very enjoyable stay.