Here are my picks for people visiting...
1. Sushi Groove - best sushi in SF... high Michelin Rating, there is 2 - one in Mission and the other in Nob Hill
2. Hyatt for some Absinthe - Absinthe has been legal in the US for 2 years now, and no one makes it better than the Hyatt bar. Just walk right in go to the top floor and order yourself a drink while enjoying one of the best views of the bay.
3. Vietnamese Fusion Food - You could go to the Slanted Door in the Ferry building OR skip the lines, tourists, and get out of down town to a place called Paleng Lounge.