short term soundproofing our floor for the sake of neighbour below (rented flat)

[travellinghopefully12]

We rent a flat, and we've had lots of complaints from the neighbour below about noise. He can hear us walking, flushing the toilet, putting things down. He can even hear the fan. Apparently he had problems with the last tenants here and the ones before, so I think the problem is not so much with us, as the flooring.

There is no way we will convince our landlord to put in a new floor, so can I soundproof short term without damaging the existing floor? Is there a way to do this. We're out of here in February.

Just live your life. You won't get this time back. Do you want to look back and think "oh yes there was the two years I spent creeping around all anxious because of some cranky randomer."?

I live in an HA flat which we carpeted throughout when we moved in 22 years ago.

We have only had two downstairs neighbours in that time. An elderly lady who was deaf ............and a bloke in his 50s or 60s who is also deaf.

This may seem a bit out there, but what about inviting him up so he can see what your doing that he complains about the most? I'm guessing the neighbour is really anxious about the noise to such an extent that he is over reacting and to see what actually is happening may lessen the problem.
If he see's you are not deliberately being inconsiderate in all likelihood it may make him a lot more tolerant. Tbh, if you leave and he gets inconsiderate neighbours, his life will be absolute hell !