I have one afternoon/evening in SF between planes and would like to treat myself to a reasonable, unfussy dinner. Haven't been to SF in years. Specs:
comfortable for a solo diner
open on the president's day holiday, Monday 2/21
not more than $50 (and less is fine)
near a BART stop in SF that is safe for a female traveler alone (will probably start out in the Mission district, need to end up at the airport, and don't want to get lost or waste a lot of travel time)
not exotic or fussy. I love seafood, bistro, American, northern Italian; not a huge fan of Asian (I know, I know), but except for sushi I could be persuaded.