I'm starting to plan a dinner out to celebrate my parents' 60th anniversary in November. Maybe 12 or 15 people. Some older teens but no small kids. I don't think they'd want to drive too far from Santa Rosa, and I thought that a tasting menu for the table would be the most special and celebratory kind of dinner.
Cyrus is within a reasonable driving distance, but I read (I haven't been there) that they have a back room for 12 and that's it.
I think Syrah would do a good job with serving a tasting menu to a group that size. We'd probably be out in the mall though, I suspect.
I don't know of anyplace else, do you? A half-hour drive would probably be the limit. I know my parents love the Farmhouse Inn, but they don't deal with groups over 6, and splitting up would defeat the purpose. I also have to remember that views and scenery take second place to indoor ambience in November.