How can I reduce the noise of us walking on our wooden floors?
It sounds like you’ve got your hands full there Rene. As per the previous correspondence you need to get your landlord involved, partly to sort out the soundproofing but also to make him aware of your neighbour’s unreasonable behaviour. You don’t mention whether your neighbour is also a tenant of your landlord. As to the soundproofing a possible solution is to take up sufficient flooring to expose all the voids between the joists – you might be lucky and find that the joists run perpendicular to the run of the corridor so you only need to take up one floorboard – and then fill the voids with loose insulation, the kind of thing you get blown into your attic to insulate it. I have used this method in the past where we had an upstairs bathroom above a kitchen and I wanted to reduce the noise – it worked fine. The only thing to watch out for is that you don’t cover over inset light fittings in your neighbour’s ceiling or they will overheat. Good luck with this.