Germany has very strict information privacy laws when compared to the US. As far I know many German companies cannot use cloud based solutions from companies hosting in the US because of these laws. For example you are forbidden by law to save user data at all. There are exceptions (eg. If the service won't be able to function otherwise) but the discrepancy is still huge. I wonder if you have to comply to these rules per se when you host in Germany or not. I am no lawer. But maybe you want to consider the strict information laws ingermany before renting big servers...