The EU is composed of 27 countries, with varying construction standards. In Romania, you can hear when your neighbors flush the toilet, especially in new constructions.
Okay fair enough, but you understand my point. Some EU countries have higher standards that avoid the issue of hearing your neighbor. I remember watching a tour of a construction site that an american construction manager was going on and the floors were radiant heat, which meant they were 9-12 inches thick of concrete and the walls were also 9 or so inches.