I'd be more than happy to visit you, or hang out/check in with you while you recover, do stuff like run for items you need, but my abode is far away from SF, and where I stay when I'm there is not exactly conducive to recovery (my office in a theater), and I'd give you a ride to the airport except I'm not sure that after surgery that riding on the handlebars of my bicycle would be good for you. (and everyone I know, really, takes BART to the airport, it's just the way it's done here because you can take it all the way from downtown to the terminal - makes it easy for everyone). But I work at either 6th and Market or Fillmore and Gerry, so I'm pretty close to - if not in - downtown when I'm there. Though my hours (I work as a stage tech for rock bands) are highly counter to normal.