We had lunch at this place and were quite satisfied with the offer. They serve traditional Mexican dishes and have several specialties with Coffee-Sauce (chicken, beef, shrimps). These are good, even though as a coffee-lover I would have expected a bit more coffee-taste.
Finishing lunch with one of their great cold coffees (equivalent to a dessert) is amazing, especially because it's quite hot in Coatepec.
The fact that you cannot pay with debit/credit card was somewhat disappointing for such a touristic place.
Overall, this is a good restaurant, but not exceptional.