This is a nice cozy apartment, perfectly suited for 1-3 nights stay with purpose of Vienna citi center experience. Location and transport communication are very comfortable and allow to reach any of Vienna attractions within not more than 30 minutes. Several supermarkets nearby are good enough to arrange quite nice breakfast with wide variety of dishes.
Carolina is very welcoming and easy going host, who may provide you with not obvious hints on what to do or where to go in Vienna.