Favorite thing: One block south of Mercado Juarez you will find numerous chocolate grinders / mixers. You can try it either hot or cold, with milk or with water. The Mayordomo store has a bar which you can sit at, have a chico mio and watch them grind / mix the cocoa, canela, almonds and sugar. The aroma is intoxicaing and divine.
Drink Mezcal..which is kind of the same as Tequila but stronger..eat Mole which is a Mexican dish, visit Mitla, Montealban and....have fun!
Fondest memory: Montealban...I was amazed by the sight scene...you can see all the valley form the moountains..it´s beautiful, cant miss that!