Notes on "What are your favorite areas of Mexico?"
No one region has it all but several have many advantages. Generally speaking, I don't care much for touristy places like Cancun or Mazatlan although we have had good times in both.
For adventure, it's hard to beat the jungle in Quintana Roo. Also try Punta Allen and a village in the jungle called Kopchen.
In Chiapas, there is more than enough to keep you busy, entertained and fascinated in Ocosingo, deep in Chiapas. Also try Chiapa de Corzo and a boatride up the Sumidero Canyon.
A city like Vera Cruz has an amazing array of things to do...I could live there forever...for real Huasteca flavor, try the Wednesday market in Tepetzintla, Veracruz.
I like the area near Puerto Angel on the west coast and Isla de Los Lobos and Roca Quebrada on the Gulf Coast.
For sheer remoteness I highly recommend Batopilas, Chihuahua, for beauty and spectacular canyons. I like the Sonoran desert below Mexicali, the area just south from Puerto Vallarta and of course one of my favorite cities...Uruapan. Cool air and good food...
But my most favorite has to be the Eastern Sierras above Tamzunchale...green, pristine, lots of water, cool, Huapangos and quite possibly the best native food in the whole world...mole huasteca and zacahuil...yummm...also try the area between Huejutla and Tamzunchale...wonderful and still somewhat unspoiled...and no turistas...
The best places in Mexico are not visited by many tourists. Not even Germans.