I came across your post about having a place in Carvajal while I was looking for something else. That brought back memories, as it was the very first holiday I took with my wife, around 1985. Back then it was a very quiet area. We stayed in an apartment owned by my wife’s boss, right on the beach. At the time the road along the beach ended in a cul-de-sac, so there was hardly any traffic.
We did return years later for an afternoon while staying in Fuengirola, and I was amazed at how much the area had changed.