I am going out of my mind with new noisy neighbours 
We live in a 4 storey Victorian conversion, ours is on the ground floor, they are on the 1st.
Previously there was a sole tenant who was lovely and generally thoughtful about noise. Never slammed a door and was quiet as a mouse between 11 and 7.
These new neighbours are a nightmare. They stomp around their flat, have music on at top volume and have no concept of closing doors, windows, drawers etc without an almighty slam.
We don’t know their landlord other than through AGM (we own and live in our flat).
The noise is driving us to distraction. We have complained nicely to the new tenants and they are quiet for a day or so before going back to their excessively noisy ways.
I have a friend who has offered very special mates rates (I think he felt sorry for me during our last zoom call seeing how frazzled I looked although to be fair that was partly not having seen a hairbrush since lockdown! 😂) to put down soundproof carpets in neighbours flat if we can get permission from their landlord.
I know from the previous lovely tenant that the carpets are threadbare and badly need replacing.
What do you think our chances are in convincing the landlord to accept our offer?