Hertz - munich hauptbahnhof return address?

I hear that it's difficult to find the Hertz return at Munich HBF. Does anyone have the actual address or can link to a google map showing where it is? This would be very helpful.

Also, is the Navigation on the Golf text only? Is this sufficient? What's the minimum to have maps?

Try this:

http://maps.google.com/maps?f=q&hl=en&geocode=&q=hirtenstrasse+at+lammerstrasse,+munich,+germany&ie=UTF8&ll=48.142237,11.559055&spn=0.005906,0.010943&z=17

The return garage is on Hirtenstrasse (one way) right after Lämmerstrasse. It will be on your right when you're on Hirtenstrasse. The garage handles other rental companies as well. They do a walk-around, note mileage, gas and gives you a copy of the form. You take form back to the HBF to get your receipt.