I sublet my flat because I recently moved in with my partner. My second tenant within 6 months just told me that they want to move out because they can’t even walk in the flat or watch TV without the downstairs neighbour complaining. Complains are always about noise during the daytime/early evenings and not late at night. I think anyone living in a flat needs to accept that they might hear neighbours living next door. Other neighbours in the building never raised any issues with one of my tenants. Both tenancies were working couples. I lived there on my own and I’m a very quiet person, I don’t even watch TV, so there might be a bit more noise now than when I lived there, but from what my tenants tell me I don’t think they are doing anything unreasonable, and it’s the second couple having the same issue with this neighbour. What can I do?