I'm on another board about fishing. A guy from there retired, sold everything he owned, bought a 5th wheel trailer and moved to Paamul, Mexico. A landowner opened up a large RV park, and it is filled with retired Americans. You rent the land, but you buy the palapa (a native thatched roof) that covers your rv and also provides an open air home. It is gated and guarded. included in your rent is all utilities and garbage. You can walk out your door and swim and snorkel. The guy who moved down there loves it, and posts on the fishing website regularly. He had a 29 year old senorita move in with him. unfortunately, that didn't go over too well with his wife. She is back in the states. He claims a 3:1 ratio, women to men. A "target rich environment" he says. haha it is about 15 minutes from Playa Del Carmen.