Today I booked a stay at the Hotel Whitcomb (reduced rate thanks to Hotels.com), which is right near where I stayed last time I was in SF.
And my mom's half-sister emailed a whole bunch of recommendations for SF visiting, which I was mapping on to my recollections of last time I was in SF as I read.
And I'm feeling ... not nostalgia, exactly, but fondness about going back. Feeling good about going. Which is good.