We are heading to SF for a conference mid-September and would like to visit some of the museums. We have enjoyed eating in museum cafes/restaurants in other cities (e.g., natural history museum in london), but, it seems like there are few recent postings of places to eat in or near museums. Given our limited time and the fact that we won't have a car, which of the museum cafes/restaurants do you recommend (e.g., DeYoung Museum, Legion of Honor, SFMOMA, Asian Art Museum, California Academy of Sciences etc.). If not IN the museum, what about very close walking distance?. Thanks so much.