If I could give you an advice on living in Germany, that would be: never rent a flat with an address that has a letter, like Baker Street 221b. The shiny information systems that crave my Big Data seem to fail this not very seldom case.
In my case it happened that two databases could not understand that I, in fact, have a house number that is not a number.
As for the internets, it seems that my ISP and the backbone provider cannot decide who is responsible for my connection since my house seems to be connected through the neighbors, which means that I will have to talk to the landlord and ask him strange questions. This obviously had to happen two weeks after I ordered the phone and internet package, which is a little annoying. (Not to say: if I could, I would make them all get only 8 KB/s bandwidth for a month just to feel some empathy)