I'm in a new building that uses sound isolating tech in the US and it's fantastic. You get some noise coming in from the front door since it's metal but both neighbors around me have dogs and I've almost never heard them. Every once in a while I can hear the slight vibration of the dog upstairs dropping its ball on the ground, but that's about it.
I've been in sound-proofed condo's before, and it's dramatically better. But it doesn't solve all the problems stemming from having dozens of families down the hall.
Some issues include:
- garbage in the hallway
- AirBnB renting to some dodgy characters who then roam the hallways, vomit in the elevator, and worse
- People taking my parking spot
- Smell of cigarette smoke
All of the above in a fancy building in a nice area.
The density allows for some incredible things in the neighbourhood, which is a good tradeoff though. I like having a concierge to receive packages and having good restaurants and other things around.
I just like that there are all these different options. None of them are - or have to be - the Ultimate Housing Answer.
My building solves this by banning rentals shorter than 3 months and aggressively tracking and fining idiots who leave rubbish around or park in the wrong spot.