673 Geary St.
San Francisco, CA 94102
The Ambassador lives up to its name, by attracting a diverse crowd mostly made up of local and foreign students who go to nearby schools. The vibe inside is decidedly casual, but people often still dress up for a night here.
Bottle service comes highly recommended because standing room is at a premium, and each booth has a retro phone for introducing yourself to a table across the room or ordering more drinks from the back.