The PC at SFO is landside, so you do not have to go through security to get there (sounds like a good thing for you, but a pain for most). If you are facing the CO ticket counter/kiosks, it is just to the right. It is a very small PC - there is no shower, only one bathroom for each sex, and, the bathrooms are 1 person at a time (i.e., you go in by yourself and no one else can go in until you leave). The staff at the front desk are extremely friendly and helpful, but the bar staff is sometimes hard to find to get service.