My first time at Mercure, and I liked it. Hotel is nicely located within a short walking distance from Gerlingen town centre. Room is functional, but a bit warm. It seemed the aircon was not working, but the window could be opened. The bed was ok. In the bathroom there was a smell of "dry floor drain" that did not go away although I tried.
Self-parking in the hotel yard was easy.
Breakfast was the usual, nothing to complain.