The ease of acclimating to living in Mexico is directly proportional to the amount of Spanish you know. While it is possible to live in Mexico for years without speaking Spanish, certainly you will get more out of your time here if you can speak in the native language of the country, especially if you enjoy getting out of town and discovering the more authentic aspects of small towns surrounding popular tourist spots.
Here is an article from the San Francisco Chronicle detailing various places to learn Spanish throughout Mexico. Keep in mind that there are many other places in Puerto Vallarta to learn Spanish, from language schools to private tutors.
Best Spots to Learn Spanish – SF Chronicle
