Terrible damp problem. The place smells awful but that's not the problem - we could have lived with that. My partner and I have never had issues with allergies but this apartment had green mold growing up the wall and behind the fridge. We had no idea what was happening to us (we thought it was covid) but it resolved when we left the apartment for a few hours. This happened every night until we finally read about mold exposure and it described the exact issues. Also, all of our clothes smelled of mildew days later (the ones we didn't even wear, they were just also in the apartment). No amount of aircon or the automated air freshener the owner has spraying can correct this problem. The place needs a structural investigation to correct the damp and a deep clean to remove the mold.