Tons (really) of street food; cheap and authentic. Eat any and all street food.
Go in the afternoon, sit at the bar (there's always space even when there's a 4 hour wait), and order the Tuna Tostada.
Favorite is a mixture of pina-guanabana-maracuya-mango (mango passion fruit soursop and pineapple).
Listen to classical music in this amphitheater where no one's allowed to talk.
