IF you can not see well in the dark (no light bulb while checking units), they will say the unit is very clean and almost brand new. When I moved in nothing was cleaned, there was no choice but unload the bags. They will take every advantage on your ignorance or mistake (or tried to create misunderstanding and use it their advantage).
Pros: You can clean blackmold in your unit only once a week
Cons: raise rent every lease term, smells, bad manager & etc