My wife and I will be making a stop in SF for a day on our way up to Napa for a wedding. We'll be staying at the Stanford Court Hotel on Nob Hill. In the morning, before departing for Napa, we'd like to take a hearty walk while grabbing some coffee and pastries at a bakery and picking up bread, cheese, olives, salami, etc. for a Napa Valley picnic. Can anyone recommend a bakery and deli within a 3-4 mile loop of Nob Hill? Thanks.