Visited on Friday without charging.
I didn't find the entrance to the Migros parking easily, but it's not for a lack of signage. The signage is there, just hidden by trees... Once you see it it's fine.
Officially the Migros is located at Bahnhofstrasse, but the parking entrance is on Wehrlistrasse. I have moved the marker to the coordinates of the entrance but kept the official address for now.
The price sheet for the parking lists the opening hours which seem to be the same as the store, but at the bottom it also says the price is 50ct/hour outside of store hours. Is that for when they exceptionally open the parking at other times? 🤔 There's 1h free parking.
The parking has a height limit of 2m, but the area the chargers are in have an extra limit of 1.95m. At least I think it was .95, it might have been .85, I didn't take a closeup picture and it's blurry in the background of my other pictures.
Immediately behind the chargers there's a door and I kept seeing employees entering and exiting. They must be annoyed when all the spots in front are used...