I am new to the area, but I have found that Chapala and Ajijic have very different vibes. Ajijic is quaint and lively, and entertainment, galleries, restaurants are packed together everywhere on narrow busy streets. The central plaza is very pretty, and there is a lakefront area where you can relax and find little places to eat. It feels more artsy, and is a lot of fun. Chapala feels more "businesslike" in my opinion as an extended visitor and has a wider main boulevard with lots of places to dine and some shops, though the side streets are also narrow with lots of businesses. The Malecon at the lakefront in Chapala is a great place to people watch, and there are market stalls all along the lakefront park there. You might consider staying three days in one, and three days in the other. My first three trips here I stayed at an AirBNB at the Raquet Club, about ten minutes from Ajijic. The views were lovely, and it was laid back, but you need to drive everywhere. There is a main road that runs all the way between the two towns, and you will fins so much to see and do along that road.There is something to like no matter where you are. I hope you have a wonderful visit. I will be moving here permanently in the fall.