Visited on Friday without charging.
The signage is very poor. First I couldn't even find how to enter the parking. The shopping center isn't indicated on the overhead direction signs when coming from the north on Kantonstrasse. I think there might have been a sign on the side of the road indicating how to navigate the intersections ahead but I spotted it too late and couldn't read it. Then I turned towards the freeway but it was the wrong move, I had to drive a long way to turn around. When coming from the freeway it's much better indicated, there's even a dedicated slip lane before the main intersection.
Inside the parking the poor signage continued. At the entrance there's a sign advertising their various services including "Elektro Parkplätze", but there are 3 lanes to the ticket gates and 6 floors, yet no arrow to say where to enter for the charging stations. If you happen to turn right onto the ground floor, then there is a sign saying "Elektro-PP" pointing left, but at that point you don't have any other choice and you will drive in front of the chargers anyway. But if you enter from the center or left ticket gate and go up the ramp to level 1, there isn't any other sign telling you to drive back down. If you do drive down, you'll see the chargers as they are in front of the exit ramp.
It doesn't help that the overhead signs are illuminated and are unreadable when the lights fail. Multiple signs were out, including the one directly above the entrance, but I went close to try to read them and doesn't seem like any of them would point towards the EV spots when working.
There are also many floor plans next to the various lifts and foot entrances, some mention the EV chargers on P0, but others don't.
When you do find the chargers, it's 4 parking spots with good EV signage. There are also CKW logos and an illuminated electric car sign that you cannot read in my picture because it's so bright it cannot be photographed without underexposing everything else 😅
The parking is open around the clock, but the tariffs are steep at 2CHF minimum for the first 3h.