I miss a day, and suddenly y'all get frisky! Obviously I'd come.
As far as I can tell, most hotels in and around Olympia have meeting rooms, which would be the most comfortable way to go. The Lacey library meeting room looks like it is already booked for Saturday afternoon, as is the one at the Tumwater library.
I do have a workable option for meeting space at my house, if nothing better is possible. It would be free and the hours flexible, but parking would be a bit complicated and there'd be no public posting of the address (RSVP'd attendees only). This also assumes that we'd only have the usual of less than 10 people attending. Not ideal, but I'm offering.