Visited today and did a short charge on the Kempower.
I only visited the outside, believing the underground parking would be closed on Sunday. But after reading the sign on the payment kiosk I wonder whether it might have been open as well. I see someone's charging on the AC tonight.
The outside is supposed to be open 24/7. The barriers were not working. If it worked there would be no free period, it would be 1CHF for 1h.
Outside, there are 8 parking spots for 4 charging plugs. It seems to be designed for expansion later.
One of the charger is 150kW, it's a Kempower all-in-one. The other is a 50kW Alpitronic HYC_50.
There's also a Mobility car with its own bidirectional charger.
A sign along the road tells you where there are chargers, but the icon is the same for the fast and slow chargers. The chargers in the underground parking have a counter that's displayed on that sign. The outside charger don't have that, just the icon.