It depends. For our local meetup, in the past one and a half year we have just met at pubs, have organized events at premises of some companies giving us place for the event, but now we have local bar where it's also possible to do presentations and afterwards just hang out. And they accept Bitcoin.
But usually it's either at some bar or some place with conference room.
I'm organizing our meetups in a bar nearby.
Once I was a bit intoxicated and took some drinks but couldn't find my wallet, owner said "cash only" but my phone said "bitcoin only", and since then the guys is orangepilled, stacking, Bitcoin standard is in the venue and we have friendly place for meetups :)