Visited yesterday without charging.
There's one charging spot in the underground parking. There's no gate, it's a parking meter.
The left side is reserved for mobility. The right side has an EV symbol on the floor and is painted yellow, while all other parking spots are painted white. Didn't stop the spot from being ICEd though. As I has already suspected from other pictures online, the spots are no longer numbered. The parking meter uses plate numbers.
There is currently some construction work in the street to the south of the Gemeindehaus, there's a sign saying to use the one-way road to the north of the building to access the parking.