I have friends arriving later today unexpectedly and we are going to meet them in SF for Lunch (we live in Healdsburg). They were going to come up here for lunch, but that is not going to work out so now I am quickly looking for good Saturday lunch spots. Cost is really not an issue for this meal. California, French or Italian would be their choice as they don't like (not sure they have really tried) much ethnic food (a shame). Any help?