Visited on October 4 and did a short charge with eCarUp app.
The chargers are in the public parking, immediately at the entrance. There's an EV sign outside, and you'll quickly see the green parking spaces afterwards.
The signs on the pillars appear to be just advertisement, not reservations for particular businesses.
There were multiple issues with the charger data and instructions, which I reported to the operator and should have been fixed by now. Originally only charger 1 was visible in the app. The other have been made visible after my report. If you scanned the QR codes on the pico chargers themselves, everything worked as expected, you could open the locations in the app, even those invisible, or use the ad-hoc payment. The QR codes printed next to each station had issues. The QRs for charger 1 and 3 were switched. QR 2 was ok. QR 4 pointed to a non-existent charger ID.