If you are interested in a house or property on the Atlantic coast, Chicagoan , you might want to go a bit beyond Cariló, to Costa Esmeralda, which isn’t as developed or crowded as MDP, Pinamar, or Cariló (Or wasn’t, our last time there, in 2018 or 2019).
This photo shows how wide the beach is there.
Seems to me to be a private area for members only.
Either way, that part of the South Atlantic coast is nice up to a point and it's brass monkey's when you dip a toe in the water.
Our favourite time is off season, way off season and we've been to Carilo several times in July/August when it's deserted and I hate crowds.