As with many clubs in San Francisco, the quality of the experience at the Mezzanine, a late night multi-use club venue, depends largely on a given night’s DJ or event. Check the calendar on the website, keep an open mind and try your luck. Of the elements that remain constant, the most important is the expansive, industrial, warehouse-conversion space. Cement and steel make a muted, serious, authentically modern backdrop for ultramodern art shows. The vast dance floor takes a solid crowd of hundreds of revellers to fill up; when it does-when a great DJ brings the party people out of their nooks and crannies-it rocks until 5am (no alcohol after 2am). Upstairs are a couple of chill areas, tastefully done in a minimalist loft-chic style. You may wonder where you are going when you duck into the seedy alley Mezzanine calls home. Inside, multiple rooms offer plenty of space to explore, as well as extensive wall space for the latest work by featured artists. Hit Mezzanine at midnight or later for an after-hours session to rival any club scene anywhere.