Lounge access at SFO & ICN, various service classes
I'm flying pdx-sfo-icn-nrt on a United-issued award ticket.
pdx-sfo UA coach, sfo-icn UA first, icn-nrt OZ bus; then nrt-icn OZ bus, icn-sfo UA first, sfo-pdx UA coach.
I have 2-4 hrs in sfo and icn in both directions. I'm curious what lounges I'll have access to (seems tricky since I'm flying in and out in different classes) and if I'll have more than one lounge option, which are the best. I'm interested in food, showers, service, atmosphere, in that order, and don't care at all about the bar.
Appreciate any thoughts.
Thank you