Making Plans for Mexico

My wife and I are making plans to go to Mexico in December, just after Christmas. We'll only be able to spend about a week, but that should give us the opportunity to taste what life in a small Mexican town (on Lake Chapala, near Guadalajara) is like. It's full of ex-pat Americans and Canadians, we understand, so English is widely spoken. So, for those of us who have never learned Spanish, it will be an easy introduction to Mexico. One of my brothers and his wife have a house there...from the pictures, it looks like a marvelous, luxurious place...and they are willing to accommodate members of their families who want to make the occasional visit. My wife and I have wanted to go for a long time, but haven't been able to make the timing work until now...but we're committed to making it work now. With good fortune, at least one of my sisters may join us there, and possibly another one of my brothers. I'm looking forward to it.