There was a Mobilecharge marker near hotel Emshorn, but it was probably an incorrect coordinate for the RELL charger.
I can't find any trace of a charger at the "wrong" coordinates. There are Google Street View images from August 2024 that don't show anything, and satellite pictures show nothing either.
The coordinates for the new eCarUp station match with the coordinates for the station on RELL website.
On all available pictures, we see 2 spaces are painted green with the RELL logo over there.