We stayed at Birgit's apartment for 4 days and it was a great experience. Not only the communication was great, but the location was perfect and the apartment was cozy and warm! It was just in front of the U1 subway line, 10 minutes away from the city center, 30 minutes from the airport, 10 minutes walking from the Prater park... And the day we arrived Birgit was very helpful and attentive to us by message. We're very happy with this experience and we would love to come back!