I recently moved into a brand new apartment building. I have a ground floor duplex (downstairs is below ground) and shortly after moving in I noticed there was something leaking into the wall downstairs. It seemed to happen only after heavy rains so after some investigation they determined that they needed to replace the water drainage system outside the building. They finished that and now are replacing the drywall & insulation downstairs - basically tearing up drywall a couple feet at a time and feeling the insulation and if it's wet they're tearing it out and replacing.
My question is: how concerned should I be about this? They assured me there's no reason to worry about mold because of the materials used (something about special drywall for basements) but obviously it's in their interest to do as little as possible. I also noticed some water damage (brown edges) on the floor (flat tile or maybe it's a tile-looking laminate?) right where it meets the wall - should I be concerned that the floor (or baseboards I suppose) I'm walking on is deteriorating? I'm out of my element and I'm not sure I can trust what management says because there's a bit of a conflict of interest.