I have been at Uni Wien for over a year and a half now and there is not much to complain about. I have found the majority of my classes to be quite interesting and the professors helpful when needed. Sometimes it would be nice to have them more available in terms of office hours because those do seem to be rather limited. There is a wide range of subjects to be studied that are available in both English and German which is quite nice. Overall it is a good University in an even better city.