My living room shares one party wall with my neighbors living room. For a very long time, they would listen to their TV at a high enough volume that I could pretty much discern exactly what they were watching at any given time. I have spoken to them about it, they were friendly, and the noise has since been lowered significantly to what is probably your average volume. However, the party wall is so damn thin that I’m still getting enough noise from there to basically drive me nuts (being uber sensitive to noise is a curse I wish upon nobody!) Apart from this one issue, I really like the apartment, and would not consider moving otherwise. I feel that my neighbors have done their part by being more considerate, so my question is if there is any kind of wall treatment or hanging of something on my side of the wall that would help muffle the residual noise. This is a rental so I can not do a perm installation. The wall is roughly 12′ long x 9′ tall.
Thank you for any suggestions. BoD