First of all - we just loved it. The tour was very comprehensive and covered very nicely the City and its surroundings. We loved the old town, getting up to Mt Felsenegg with amazing views, crossing Lake Zurich on a ferry - incredibly nice views again. All in all I would definitely recommend the tour to anyone who doesn't have much time to discover Zurich by themselves. And I reckon you can't possibly see so much in one day of Zurich if on your own.
We had a very nice lady for our guide who spoke English, German and Spanish. The coach was very convenient and it was a nice mixture of walking and just being driven around. So well deserved Four Stars.