German bathrooms are  a funny thing.  To us anyway.  They most often have turn knobs like these.   Very often there is also some change involved.  Either you leave it in a bowl on the sink or you may actually have to insert it in the door to enter the stall.  Reason being – there is often a live person nearby who is vigorously cleaning the room all day long.  So you tip. Even if you are an American and are a little unsettled by women running in and out of both the men's and women's restrooms whomever may be present. (one of my little boys hasn't yet recovered from being advised on a potty stop. I will leave it at that lol)

The faucet in this restroom will strike American readers as odd namely because it is singular.  That would be cold.   But, not uncommon.

If you follow this  Pinterest board of mine, you will guess how much I loved these mod door signs spotted at a local church:

I am easily amused, although you may be too if you made it this far down a post about potties. ; D