What’re the bests for Sushi and Shellfish in San Francisco?

Specifically looking for best sushi, best *affordable* sushi (so your picks for the best at any price and the best on a budget would be great); best seafood restaurant. An oyster happy hour or similar would be great— raw bar where you can get a little break at happy hour. I have also heard of a bar with lots of British motorcycles in it and would love to find it— but not the Ace cafe.

Will be in San Fran for work for one week; staying downtown on 2nd near Fremont; I have an expense account but my per diem is about $110 and I know San Fran is expensive, sushi is expensive everywhere, and sushi in San Fran will probably blow away that $110 before I know it. Oysters too!

Neighborhood bars to throw darts or shoot pool would be nice. Microbrewries, etc.

I will not have a car so walking distance to 2nd near Fremont is great but I can spring for a cab, too.

Thanks in advance!

There are several sushi places near your hotel with good reputations. These are all within walking distance…

Ozumo and Ame are on the Chronicle’s list of the 100 Best Restaurants in San Francisco. Ozumo has great sushi. While Ame is known for successful fusion cuisine (successful being the keyword, as there are some awful fusion places out there):

http://www.ozumo.com/main.htm

http://www.amerestaurant.com/home.html

Kyo-ya serves up formal Kyoto-style cuisine for $80. Yes, that’s expensive by U.S. standards. But it’s still quite a bargain compared to the $200 typically charged in Japan for this kind of meal:

http://www.kyo-ya-restaurant.com/

For less expensive sushi, there’s Sanraku. It’s mediocre compared to the more famous restaurants, but few sushi places in San Francisco are truly "bad." Rice that tastes like pure vinegar, lemon wedges to cover up spoiled fish, and such abominations are relatively rare…as the locals are pretty picky about food.

http://www.sanraku.com/