San Francisco Public Library Main
Hyde and Grove, San Francisco,
0% positive
Directions: Bathrooms are on the lower level, behind the stairway. If entering on Grove, go down the stairs or spiral ramp before you get to the security gates.
Comments: There are two sets of bathrooms, the lower level ones described, and another set after you pass through security, just past the elevators. Security just means you're not stealing any books, so no worries going through it.