r00k13

Well, if his wife is the one who rents the new apartment, I think he could technically move with her and take care of the paperwork later... (if the landlord agrees to this, because the authorities will probably post his residence permit/notifications to his current address) If his resident permit has expired anyway, does it matter so much where he actually lives? Eventually, he (or Magda) could rent a livable flat while keeping the current one as well until his residence permit is taken care of, if that is financially feasible. Or they could just Airbnb something until matters get resolved...

+1 for de-humidifiers, but don't even think of non-electric versions. You could try drying clothes in the smallest closable room with the de-humidifier running, just remember to empty its water tank regularly. This way the rest of the apartment won't get more humidity from the drying clothes. And I have the suspicion that de-humidifiers are more efficient for smaller spaces... If your apartment is not on the top floor, your top neighbor's bathroom (broken pipe/plumbing) could be the cause for the mold in yours. Otherwise, it must be the roof (but then I guess it's not directly your landlord's fault, there must be a caretaker/representative of the whole building who has to commission roof repairs, if things in Poland work any similar way than in Hungary). If moving to a rural area (like small villages with <1000 residents, far from bigger cities) is an option for you, you might want to check the rent on houses there. This way you might be able to get a house with a garden, which is a) cheaper than your current apartment, and b) isolated enough from neighbors so that making noise would not a problem. Best of luck with moving out!