Privacy options for window in shower

[Shane Moss]

I've recently installed a new vinyl window in a rental to replace the old cubed block glass that was in there. This is a 1950's house with only one window that is in the shower. I need something to let light in while remaining private. I've seen the option of a curtain, but I don't care for this look. I've also seen tint like films at Home Depot, but none of them seem to obscure enough. I'm also not sure if the film would hold up to a constant barrage of water. I thought I've seen something thicker, like a rubbery film that's a couple of millimeters thick that clings to the window. Maybe I'm not remembering right because I've scoured the Internet and haven't found anything like this.

One more thing... I've tried the frosting in a spray can that is supposedly meant for a bathroom, but it was worthless. It came off too easy.

Can you guys offer any advice?