As far as I know yes Placencia did have a place that AA meetings where held. However since the hurricane I am not sure if they are still taking place or not. I would suggest that you contact any motel via email on the pennisula and inquire. Hope this helps.
The last I heard, the "hot bed" for Placentia AA was at the Serenity Resort. The owner sold the resort and unfortunately met his death in Honderas. I don't know anything further, ya might check the World Directory for names, ect. Good luck, fellow.