Toilet: Male or Female or...

In a Belgrade pizza bar, I come across an interesting installation in the toilet.
A fountain with water pipes and a black stone sink.

And the men's and women's cabins, instead of the classic W/M marking, are marked with men's and women's shoes.

An interesting choice of interior designers, but it is very clear who should enter which cabin...

As I wash my hands, I read the writings of a humorous nature on the walls of the toilet, as well as a reminder to less cultured users, how to behave in the toilet (unfortunately, people still need to be reminded how to behave in order to leave behind a tidy toilet).

While I'm smiling, related to the inscription "it's shorter than you think", I remember a novelty that I've only heard and read about and that the modern age brings us...
Unisex toilets... Neither male nor female...
Together, all in one...

Have you had the opportunity to use one of these unisex toilets?
How did you feel in them and how did you behave?
If you want, share your experience.

I am most interested in how I should behave when I find myself in one of these, which still does not exist in Serbia.

Instead of using the urinal, I will use the cabin and the toilet, that's OK with me, but what should I do before leaving the cabin?
Should I leave the board raised (ready for another man) or should I lower it (so that the woman who enters after me does not lower it)?