Visited yesterday without charging.
I got stuck in traffic. There's construction work on the double roundabout which caused a lot of delay. It probably won't be for too long since they had people manually directing traffic instead of lights.
On openstreetmap it looks like there's a single parking lot connected to both Schwarzseestrasse and Freiburgstrasse, but it's actually cut off by a ribbon. The chargers are in the parking accessible only from Schwarzseestrasse.
While I was driving there I saw a name for the parking, but now I can't find it again and I didn't write it down. The name I saw somewhere online was indicated on location, but only for the parking accessible from the Freiburgstrasse. The parking on Schwarzseestrasse doesn't have any name posted on location.
There's no parking meter or maximum time posted. Seems to be free to park.