I have a 13 hour layover at SFO. No bags. Arriving around noon and leaving around 1AM. I also want to lounge hop a bit (Polaris, Centurion) -- not sure if I'll hang out there at the beginning or end of the layover.
I previously did the bus tour around San Fran and walked around all of the Piers / Ferry Building. What should I do this time? Preferably public transit accessible.
I like urban vibes, maybe walk around downtown and subway to a few interesting areas?