We stayed at the Novato RV Park for a week. It's tight small park but very close to SF. Novato is a great little clean upscale community. The park has several spots reserved for visitors. The permanent residence were sketchy but very nice. A deli and store on site. We have five slides and yes it was tight but great location. We stayed there for a week and will return again. Stay away from park in Larkspur near Ferry Terminal and Candlestick Parks RV, that's my opinion neither looked good to us at all. While a littlemfurther away Wine Country RV in Sonoma County is nice. I like the North Bay so that's my advice.
http://novatorvpark.com/
http://winecountryrvparksonoma.com/