Best Western Paris CDG Airport

We are family of 5 with 3 little kids. (2 are still toddlers) We usually get a room for 5 people but they didn’t have a room for it so we booked room for 4. But when we got to the hotel, the lady at the front desk was extremely unfriendly, said she needs to see all of our faces, and for safety reasons we can’t stay in the same room. So we paid for another room. Which was very inconvenient and we were not happy about being separated. But they gave us 2 rooms that are next to each other. However when we opened those rooms, one of them was occupied!! We were shocked, and also people who were in the room was very angry and screaming at us. Our kids got very scared and afraid that the people were coming to get them. We went back to the front desk and they were also surprised. They started investigating what’s going on and who’s is the room. It was already late night and we were so tired so we asked them to give us any room but the lady at the front desk said “this room was suppose to be empty! I need to know who rented out this room!” I thought that was very unprofessional. After that, they still gave us a key for a wrong room again, so it took us about an hour to settle down. Finally we got in the rooms. One of the room was ok, and the other one was nice. Their bathroom was not so clean. The toilet was stained and there were a lot of short black hair all over on the bathroom door. It was the last night of the trip in Paris and ended up with unpleasant feeling.