The apartment was lovely and full of amenities. Katharina was very nice and quick to answer all my messages. The bed, which Katharina built herself, was very comfortable and unique, which can also be said about the whole apartment. We had great fun riding on electric scooters into the city center, which only took about 15 minutes and was very cheap. I would definitely return to Katharina's apartment if I find myself in Vienna again. Great value for money :)