German hotels don't have internet? No phone?

Yes, there is a country hotel. Only small private country hotels can have no internet, but they must have telephones. Although there may be no telephone in the room, the boss will set up a public telephone at the registration office. And if you are on a business trip, you won't go to such a biased place, will you? That kind of place is generally known to locals, and people from other places generally don't go. Even if you go to live in this place, backpackers will live. Of course, this is what I know. Maybe your friend will encounter other situations.