Help! We don't know where to turn. My Eastern European mom who lives in SF, is turning 90 early this summer, and we plan to throw a party for her, her surviving friends and some family. I have mixed feelings about making this appeal, because except for the family contingent, we are dealing with anti-Chowhounds here. No fusion, Asian, anything these guys would label "exotic". And yet it should be sumptious, gracious. Someplace that would make Emperor Franz Josef nostalgic for his palace in Old Vienna. A view would be good, and if outdoors it should be out of the fog belt. We're at a disadvantage, for although we're SF natives, and show up every other year, often for months at a time, we now live outside of Boston--and we are out of touch. Any suggestions?