We acquired the space of our neighbors that had the sound leaks, so that is no longer relevant. For the rest, the walls are thin... but there is little we can do about that unless we invest serious money.
There are sound leaks to our neighbors.
They need to be isolated.
More information needed!
In the meantime, NO LOUD NOISES between 08:30 and 17:30 (local time) Monday-Friday (inclusive), please. They claim to be on the phone all the time! (any of the times) TYVM.