"Nick's Crispy Tacos is only open during the day, since, you know, it operates out of a Russian Hill night club (you enter through a side door of the club). They have the best tacos—crispy or regular—along with perfect guacamole, elote (Mexican corn on the cob), and delicious melon juice. The plush red booths and sprawling dance floor make for an interesting set-up for a taco place but it's a fun place to bring out-of-towners. They also do "Taco Tuesdays" when you can get two tacos for $6 and two Mexican beers for $7."