from Trip Advisor:

Review of: 8-Hour Silicon Valley Tour with Private Transportation
We had the best day with our tour guide. She was very knowledgeable and interesting, plus a great driver. We went all over Silicon Valley plus additional places of interest that she thought we would enjoy and we did. We wanted to go to Half Moon Bay for lunch and she took us there as well. Then on the way back she added some more great places. You can't go wrong with this guide - she is the best.

The only way to see San Francisco
Review of: Private Full-Day Tour of San Francisco
When we got off the ship Sharon was waiting for us to begin our tour. After a brief review of what she had planndd, she asked us if there was anything else that we wanted to see. We then started the tour at Fishermans Wharf to see the Sea Lion Colony in the harbor. From there we proceeded to some of the many colorful sections of the city. We went down Lombard St which was an experience in itself, a stop at the cable car museum, the artwork in Coit Tower, and many more neighborhoods. A brief lunch and then onward to the Golden Gate Bridge overlook, a drive across the bridge and the overlook on the other side and then back across to the sight of a worlds fair and other statuary. A few more neighborhoods then back to the ship. Later we had a great dinner based on her suggestion, I don't think there is any way to see more of an area in eight hours than Sharon provided for us!