Visited on June 8 without charging.
The charger is in the parking for the retirement home, indicated "Besucher".
I was not able to confirm whether there were 2 spots with the plug symbol, because a car was parked on the second one. On the picture on Swisscharge we see 2 spots have the symbol.
Every single visitor parking spaces was already occupied, including the second parking they have further on, so I didn't investigate further and continued my drive.