There is Pay Parking nearby but approaching by bike or walking is best. This location is very near a Train Station. This Cache can be a MUGGLE challenge during the day but there are less MUGGLES in the evening.
At GZ there are many power lines nearby, trees, buildings, and this may cause a GPS Signal drift to occur. However, the coordinate have been checked several times so by searching carefully, you should be able to find this Cache without to much trouble 
You do NOT have to enter the Bike parking area to find this Cache, and there is a HINT too 
Also, during the evening hours, you may be able to enjoy the "Devine Wind" that is at GZ. 
Good Luck and Happy Hunting!! />
Congratulations to kajuyone for FTF!!