Duolingo has been showing sentences with "die Toiletten" in the plural such as
Wissen Sie wo die Toiletten sind?
Wo kann man die Toiletten finden?
I have also seen other examples with the plural
WO FINDEN SIE DIE TOILETTEN? (source)
But it seems the more common way to refer to public restrooms/bathrooms is "die Toilette" in the singular. I know in French toilette is almost always used in the plural when someone asks for directions to the restroom/bathroom (unless referring specifically to one piece of the toilet thing). What's the difference in German then, when people say they are looking for die Toilette and die Toiletten? Are they used interchangeably?