Where is a good place to play in San Fransisco?

Small theaters are all over SF. Your question doesn't indicate if this is a solo show, one off or your budget but as a small stage veteran of long standing you might want to check with the following venues.

The Exit Theatre on Eddy near the Powell Street bart station. They have 3 spaces including one cafe space that is good little bar style venue.

http://www.sffringe.org/

Off Market Theatre on Mission near 5th Street. There are actually two small theatre that each seat about 60 people. Try contacting the hosts through their website

http://www.pianofight.com/offmarket

Bars that might work for you

The Purple Onion on Columbus near Jackson

Cafe Du Nord on Market near Delores

Edinburough Castle on Geary near Polk

examine out Chinatown, Fisherman's Wharf, and get of undertaking to stroll around the Golden Gate Bridge. I stay close to San Francisco, and those are a number of my fashionable issues to do.

Look for community group meeting halls, such as the VFW, labor unions, American Legion- whatever it takes.