Easy to get, easy to see, easy at all. We can absolutely recommend it.

Easiest way to explore such a great city. Next time we will do it again this way

Excellent

Easy to find and use. The location of the river boat was not well explained. Had to change buses at one point because of driver changeover which was inconvenient.

I purchased the Vienna Passes for myself and my two friends. We didn't have to worry about the Hop on Hop off busses because we just went to the offices of the Vienna Passes and we were given a money off voucher booklet and the passes to wear immediately. We still had to queue in some places to get a valid entry ticket but it wasn't too long anywhere. Busses ran regularly and we never waited longer than 5 minutes at any given time. I certainly would recommend getting a Vienna Pass.