We spent a little bit of time on" southside" and the property and the views were absolutely beautiful, ( right on the lake.) I liked it there many times more than anywhere on the north side..... but buying and selling there is another story. Maybe if I plan to die there and do not care what happens to the property afterwards. Otherwise, I most likely would not do that. There were cases that indigenous groups claimed properties even if people had (supposedly ) title . One can sell, but only to very new people that are not aware that "things" in Mexico are not the same as back home. . The same on the north side east of Chapala past the golf course...... in Tlachchilco area. We inquired, but it was long time ago, and I do not know how much time has changed.
Be careful and good luck. I wish I would have the courage to do that.
All the best.