WhenI was stationed in germany 50 years ago the Germans could not understand the concept of showering every day. For them it was once or twice a week. They thought we Americans were very “wasteful” and over used resources. So no hot water should not be that much of a real problem for them.
I was stationed there too in the mid to late 60’s. German “dry cleaning” was the habit of “cleaning” clothes by hanging them out the window for awhile. If you found yourself indoors with a crowd your nose would pick up the collective stank.