Exact coordinates: 37.769404, -122.511056
Approximate address: Big parking lot across the street from 1000 Great Hwy, San Francisco, CA 94121
No official website, but here's the public invite: https://www.thesamba.com/vw/forum/viewtopic.php?p=9245410#9245410
DETAILS:
10:00 am - Dark. FREE. Just show up! This is a popular event with relatively limited parking. Get there early if you want to guarantee yourself a spot. The event takes place in the parking lot across the street from the Beach Chalet Bistro.