Noise is not the biggest problem: Cheap apartment buildings from the 60s and 70s has such thin walls what they have no thermal isolation whatsoever. In poor nei

Noise is not the biggest problem: Cheap apartment buildings from the 60s and 70s has such thin walls what they have no thermal isolation whatsoever. In poor neighborhoods you will see air conditioner machines everywhere because there is no other way to keep the flats livable.