I will be visiting SF with my husband, 15 yo son and 13 yo daugher. I was last in SF when I was about 8 (long time ago). I am trying to figure out the areas of SF. How far are all the tourist areas from each other. Is the wharf area a good place to stay with kids? How are the hotels there? Is it easy to use public transportation or should we rent a car when we arrive at the airport. When we leave SF we will need a car as we are planning on taking the coast to San Diego, stopping along the way. Can we rent a car from one of the hotels when we check out (Avis, Hertz etc.) Any recommedations for a hotel would be appreciated. Higher end hotel is good. Views would be nice, but convenience and definitely cleanliness is the most important. I guess i'm asking a lot, but living in New York I know that things can get confusing in big cities. Would like to see as much as we can in about 3 days. Thanks.