Our three hour tour was exactly what we needed to get the lay of the land. Our driver Mike was great and very informative. Perfect! We criss-crossed the city and stopped at the Klondike Gold Rush National Park downtown, Theo's chocolates and the Troll in Fremont, the locks and fish ladder, and at the Queen Ann overlook. Our driver then would stop at any place or your hotel to drop you off at the end of the tour. Most of our 14 tour members got off at the Space Needle/Chihuly stop.
This is a very good way to decide what to do next in Seattle.