Hi, looking for advice or solutions.

I rent a top floor flat in a 6 block. The water storage tank in the attic is constantly flowing causing noise from above and water running in the pipes to downstairs. I recently came across the same problem at the girlfriends flat and it turned out the neighbours toilet flush was loose and causing it to drain.

I have a huge gut feeling I have the same problem. Unfortunately my neighbour isn’t the type to interact with. They are away for a week or 2 at a time, only to come back for a day here and there to ‘party’ until early hours of the morning. It was the last time they were in when this problem started and they haven’t been back.

Due to me renting, the access to the loft in the stair is locked and I have no idea who can even get to it anyway. The noise is bearable for now but I worry about it causing problems mainly.

Any advice appreciated