I liked least:
- That the photos "not to miss" is not with the cards because it forces to turn the page to see where it is located
- The "Disneyland and Orange country" who talks too much to the amusement park and not enough of the beaches in the area
- The parties "Northern California and the Central Coast" and "Napa and Sonoma wine country", better cutting for clarity on the geographical layout is a good idea
- Cities Hotels are quite expensive, more budget hotels would be well
In conclusion, I recommend this guide which is very convenient for its route, which gives good tips and which has very nice photos.