My worst connecting room story was when the connecting door on my side did not even have a lock or door latch in our door! Staying at a Marriott for 7 days.
Of course we called the front office and they said there was no way for the other room to open their door. But still it was very uncomfortable to have our 1/2 of the connecting doors sitting about 4 inches open so we piled luggage and anything else that was not bolted down in front of it.