Does it ever occur to buidling developers that people don’t shower with just soap on a rope? In our holiday apartment the only place for the teenage girls to put all their bottles is on the window ledge, on the 1st floor, right above the front door. It’s a domino set waiting to be knocked over.
The other problem with shower storage is that whatever you use has to stand up to water. Which is why most storage caddies are plastic. So here is another solution provided that you have an old wooden bath caddy and your tiles suck up to suction cups.