I have been to a variety of sushi restaurants in San Francisco (and in LA, too) and this one is the best.
It's tiny -- there are only four tables in the whole restaurant, and there's the same lady making all the sushi every time I go. But, it's delicious.
The sushi is incredibly fresh and everything is made to order. My absolute favorite roll is the Sumo Roll, tuna, shrimp, lemon, garlic, heaven.
Favorite sushi bar in the city and totally reasonably priced.
Pros: fresh, clean, small, homemade
Cons: crowded, very little seating