Quieter than we expected. Convenient location for us as much of what we wanted to do was in Heitzing or easily reached in central Vienna via U-bahn. No air conditioning (we knew this) but it was very pleasant during our July stay - windows and balcony door let in great breezes and temperature was never a problem for us. We were not at the flat enough to use the back garden but it would have been an ideal spot for a glass of wine and a rest!