Visited on November 6, 2025 and charged with eCarUp app.
I assume this is open to the public, but it's not 100% clear. The eCarUp marker is simply called "Alte Strasse 80" and has the instructions "Bitte Garage Links Parkieren". There's indeed no forbidden parking sign in front of the left garage.
The next garage has a sign forbidden parking except Airbnb. The charger could also be used from that spot.
There's another charging station that's probably not networked further to the right.