Should you add Puebla or Coyoacán to a Mexico City trip?
Coyoacán is an easier city layer; Puebla is a fuller day with its own rhythm. Add either because it changes the trip, not because CDMX has an empty afternoon you feel guilty about.
Answer
Coyoacán suits travellers who want Mexico City to slow down without really leaving it: leafy streets, museums, markets, cafés and a gentler pace than the capital’s busier zones. Puebla is a more substantial move, with its own food, architecture and old-city rhythm, but it asks more from the day. The mistake is stacking every possible excursion around CDMX until the city itself becomes a base for errands. If you have four or five days, choose one extra layer. If you only have two or three, let Mexico City be Mexico City.