Hearing the neighbours tv through the walls.. . Anything you can do ?

Not a huge complaint. Just wondering! moved house recently and I can hear the tv from next doors bedroom or music being played, I don't think it's that they have it on that loud think it's just thin walls maybe.

we are putting a wardrobe up so hopefully that will stop it a little bit, anything else worth trying? I'll be scared to speak thinking they can hear everything on the other side too!!!