It more than met my expectations. Our guide was in tune with the subject matter. Shared many "fun" facts. Was entertaining too. Have recommended your tours to several people.
Unfortunately the title is misleading. There is no hopping on and off. You stay on the trolley for the whole 1-1/2 hr tour before they let you off. Very disappointing. And you hear a lot of the same history on both the trolley and river cruise. It's really not necessary to do both.
The place is so beautiful that you do not need a day of hop on and off, you need 2 days as minimum. however it can be made more detailed by showing some of the best monuments or places besides taking a tour from the road.