My stay at Karla’s place was very nice and memorable. Both Karla and Christoph are great hosts and their dog is really cute. I enjoyed being surrounded by books that motivated me to stay at home and have great relaxed time. Karla and her partner were great in providing tips to local shops and bars. The place itself is in the heart of historic part of Vienna and within 2 minutes walk of shops and metro. I really enjoyed my stay and I highly recommend this place.