Visited on January 12 and charged after many problems.
The directions are pretty good. There are 2 totems at the entrance of the parking, and a sign at the only turn without totem.
As already known, the hardware is the same as in Chavannes, but here there are only 4 spaces instead of 8.
I first tried charging via credit card. It didn't tell me how much the electricity would cost, only that the reservation was 80CHF. Then I saw all possible terminal errors, "communication timeout", "Declined" and "Ungültige Transaktion". I was not able to get it to work with either Google Pay or my Debit Mastercard.
What the ad-hoc price would have been if it worked was a complete mystery. At the time the website said 77ct/kWh. The 2 totems on location were saying 56ct/kWh (which happens to now be correct, but likely was not at the time). I was not able to find the price anywhere on the charger itself. Only after a while I realized where the price was: on the screensaver! I never saw the screensaver because as soon as you plug in it wakes up the charger and I did that before walking to the screen. I didn't find any button to bring back that screen on demand. Since all 4 stalls share a single screen, I don't know how you are expected to ever see the screensaver during popular times when someone is constantly plugging or unplugging.
I then tried to charge with Swisscharge instead. I don't remember if I tried RFID but in the app I had issues. Because I had already plugged into the charger to try the credit card reader, the plug I was using was stuck as occupied in the Swisscharge app. Even after unplugging and waiting a few minutes, it did not became available again. So I had to move to a different stall that was shown available in the app.
Despite the near empty parking, there was an EV blocking one of the charging spots. At some point the owner came back and left so fast I was not able to talk to them. I wonder if they tried charging and just gave up.