I live in the "attic" flat of a converted house, there are three flats in total, ground, middle and ours, we have been here for almost 6 years and rent
We had new neighbours move in about 6 months ago, a couple with a toddler of about 2. they dont speak much english so are just on nodding terms.
For about the last two months, we have been experiencing noise from their flat, what i mean is that it sounds like they are moving furniture around constantly or running around and slamming doors so much that it's making our floor (their ceiling!) vibrate, this is from 8am to 9pm almost every day. They have also been going out and leaving the communal front door unlocked or even worse the key left in the outside of the front door, I have addressed this issue with a note asking to please lock the door behind them
BUT THE NOISE ! What can i do? i really don't believe a 2 year old can make that much noise constantly, and like many i am WFH and it's becoming extremely distracting during the day and annoying at night when we are trying to relax but can just hear constant thumping/slamming/vibrating :(