Fábrica
Fábrica is a very nice, peaceful spot we discovered by chance. Quiet and beautiful, with a relaxed atmosphere, it sits right by the water, and there’s a small kiosk on the shore where you can grab coffee, beer, sangria, and pastéis while enjoying the view.
There is a restaurant there too. It's called Fábrica do Costa; however, I did not check it myself to recommend it.
It is near Vila Nova de Cacela.
Here is the link to this place if you want to drive there.