If you're looking for a place to get a restful night's sleep, Best Western and Plaza hotels are definitely not the places to go.
I learned this the hard way after a recent stay at the Best Western Plaza hotel in Darmstadt. In the middle of the night, we were abruptly awoken by a loud electrical bang. It turns out there was an electrical hazard in the hotel. The noise was so loud that it was impossible to sleep through it (80-90db).
When I spoke to the night receptionist about the situation, he told me to take some ear plugs. The problem wasn't solved until an hour later.
Needless to say, it was a very disruptive and unpleasant experience. When we checked out the next day, the day receptionist was rude when I told him we were unhappy with our stay.
He rudely threw us a free parking ticket and acted like that should be thanking him up for the terrible experience we had.
I would avoid any Best Western or Plaza hotel in the future. If you're looking for a place to stay, it would be better to sleep in your car than stay at one of these hotels.