I used Bajazzo hotel like 5 times. I mainly went to Vienna to attend some official meetings.
I really liked the breakfast from the hotel and free wifi. You don't find services like that so often in 3-4 stars hotels in Vienna.
The place is clean, with a really good location in the center of Vienna. Very close to the bus station (Vienna airport lines) and underground train.
I will definitely choose Bajazzo when I will go next time to Vienna.