Lots to pick from...depends on what you like...
Depending on what "experience" you're looking for, there are a lot of restaurants to pick from:
Don't know if you've heard of/been to Thanh Long or Crustacean
. Both owned by the same family, and most folks go for the roasted crab and garlic noodles. The crab can be pricey, but they also have lots of other excellent, less-expensive items on the menu. Thanh Long is on Taraval Street at about 47th Avenue, in the Sunset District. Crustacean is located on California street, between Polk and Van Ness
I've been to Swiss Louis
on Pier 39 several times, and have always been pleased. It's a busy place, but the food is quite good and the service excellent (in my experience, anyway).
Then there's the Stinking Rose
, in North Beach, which serves up a classic San Francisco-style Crab Cioppino. I've never been, but have heard good things from friends.
Another option would be one of the Seafood places on Fisherman's Wharf...can be somewhat "touristy" but always excellent food. Alioto's
come to mind.
Just a few ideas to get you started...