I am used to the cheap Campanile Hotels, as I have stayed quite a few times at the CDG ones (there are 2 near the airport). They are usually basic, but clean and friendly hotels.
This Campanile is a horrible mistake, I don't even know why Campanile keeps it in their roster ! It is next to a highway in a terrible neighborhood, and it is totally run down: paint peeling off every where, dirty corners in your room, half broken fixtures, spooky neon lighted corridors....the place is straight from the seventies, and clearly has not been updated since.
Moreover, during the night, the people in the adjoining next room tried to force open my door...almost called the Police ! Next morning, when I tried to tell the reception what had happened, they were totally uninterested - and barely surprised. I checked out immediately and decided to forgo my second night there.