The bathroom needs to be destined properly.

My shower in Denmark has no door, and no curtain, but the splashes don't reach very far away, and aren't in the way of anywhere I'd want to walk after showering anyway.

I've often seen hotel bathrooms in other countries that get this wrong. In the worst case, splashed water from the open shower runs all across the bathroom, and in one case (a Grand Hyatt!) into the main room carpet.

Did the designers not know water flows down?