"Just off the lobby in the Westin St. Francis is Clock Bar, now over a decade old as one of the first hotel bars in the city to up its mixology game and become a draw for local cocktail hounds. The low-ceilinged, mid-century vibe of this den-like hideout is enough to warm you on a chilly SF evening, and it’s a good little secret to have in your back pocket when seeking out a top-notch cocktail, right on Union Square." - Dianne de Guzman, Jay C. Barmann, Caleb Pershan