Visited in December last year without charging.
Because the name on eCarUp is "ESAG Besucher" I assume it's for customers only, but this is not super clear on location. There's a sign saying access forbidden at the entrance to the property, but it's on the other side where the private parking spaces are. I guess the chargers are technically on the same property so the sign applies as well, but they are installed on their own with 2 green parking spaces.