The Happiest Hour: La Biblioteca Spices it Up With Killer Margaritas Megan BarberJanuary 3, 2014 What: La Biblioteca Where: 1610 Little Raven St, Denver, CO 80202 When: Happy Hour is everyday from 4 to 7 pm. Sunday they have all night happy hour cocktai... 303 MagazineBeer, Bars and BoozeFood + Booze3 min read