The ambiance might not show it, being in one of the newest hotels in Mexico City, yet, the flavour and service of "El Cardenal" is unsurpassed.
As a recommendation, arrive after 2 pm, otherwise, you'll get the brunch menu, which is fantastic, but pales in comparison with the lunch!
Soups are marvelous, bringing true textures and flavours of yore. Anything you ask from the menu will surpass your expectations and bring true traditional cuisine tastes to your mouth.
I cannot pick one dish above any other, because each deserves a medal on its own, yet, I do encourage you to forgo coffee and instead ask for the herb tea, as served in the Tarascan region of Michoacán. It will leave you with a great taste, after what I can only imagine would be a great experience!