Live in Trier or Thionville with Luxembourg working visa?

Does anyone know if living in Trier or Thionville with Luxembourg working visa or not?
If so, what process or paper work will be required specifically?
HR at my company told me who is Japanese can not live there...

Appreciate if you can advise

Anywhere south of the French border: Bad idea. Luxembourg is already quiet enough, you don't need to make your stay depressing too...

Germany: cheap. But they are ze germans... ;)