Very professionally run, great lunch, great staff, great boat and a wonderful part of the world. The trip around Sarah Island was a highlight. Only negative thing was that the forest walk was short and restricted to a small area so you didn't really get a feel for the old forest areas. Recommended.
Great fun although the segways are harder to handle than you would expect but a fantastic and unusual way to see the city. Would recommend as just a fantastic experience but if you find riding a bicycle a challenge then maybe this is not for you. Great guides and zooming through Vienna is something I will always remember. So 8/10 from me!