I am living in south of spain and not only spanish do not care about hearing noise, I think they actually do like being noisy and hearing noise. They are basically shouting all the time instead of talking for example. At the beginning I almost felt I should have interrupted couples in the middle of their conversations. I thought they were arguing and were about to become physical against each other, shouting mere inches from each other face with arms throwing all over the place. But no, you quickly realize they are just talking about trivial things, agreeing on something or just complaining about something external.
I am living in Andalucía (originally US) and have had the _exact_ same experience. I have gotten used to it...except for when my upstairs neighbors decide to make a glorious racket every night at exactly midnight, right when I'm trying to sleep.
> They are basically shouting all the time instead of talking for example.
That's my experience as well. Sometimes it's hard to tell apart if there's a bar brawl happening on the pub down the road or if it's a grou having a good time. It also doesn't help that in both cases Spaniards curse like crazy.
Living there you kind of get used to it.