Erotic Hotel Halloween Ball on October 29th 2016 (Saturday) 9:30 pm to 2:00 am inside the Emerald Ballroom of Holiday Inn, located at 1500 Van Ness Ave in San Francisco, CA. Haunted Projections Screen, Laser and lighting Effects, Witchcraft inspired cocktail and more. Limited amount of early bird discount tickets to Erotic Hotel San Francisco Halloween available. * Access a two hour Premium Open Bar, 10pm-12am, for only $59. Sexy Costumes recommended, but not mandatory.