Although it says Sonoma, it really is a 20+ minute drive to Sonoma. I would recommend the Renaisance in Sonoma if you want something there. Two Restaurants come to mind. Girl and the Fig (Profiteroles are great). Della Santina's (good Italian). I wasnt as impressed as many for the restaurant at the Renaissance. Maybe a bad night, maybe the wrong choice of food.
Remember most restaurants in this area allow you to bring your own bottle of wine and they will charge you to open it (Corkage Fee). This is much better then paying the high markups that the restaurant charge on wine.
Ravenswood Wine tour is very good. As part of the tour, you can actually do barrel tastings.