I presume the 'not going to visit the Eastside' bias still applies, but
just in case:
Black Lodge Research hackerspace is an option, I am a keyholder.
It is located in Redmond, near the entrance to Marymoor Park, a few
thousand feet from the new Redmond Community Center.
Parking is not a problem. Public transit is not directly to the
building, the nearest KCMetro access is Bear Creek P&R, and then a
~0.8mile walk. Carpooling from Westside to Eastside for regular GSLUG
users might be an option.
https://blacklodgeresearch.org/
https://www.openstreetmap.org/node/2184616237#map=19/47.66334/-122.10399
https://map.what3words.com/warm.rapid.epic ("warm rapid epic")
We have a classroom with about 30person max capacity, and HDMI format.
If we can get our A/V person involved, we can live-stream or just upload
the non-live video to Youtube. You can see the classroom from some of
the previous talks of the DC206 Meeting (206-area DEF CON community
monthly meetings):
https://www.youtube.com/channel/UCVZb0Q7zgrjfwncn-jcPwsg
Classroom aside, we also have a hackerspace/makerspace, a fridge with
beer and hard cider, and a BBQ. :-)
Salt has visited the place, and can give more feedback on BLR.