After complaining about this, I had a guy repaint the ceiling. There is a window but it doesn't fix what is a damp bathroom. A short 15 minute shower cracked the new repainted ceiling because all the steam gets absorbed by it. We were about to install a fan in the windows but I doubt it will solve the problem because the steam rises up pretty fast and not at the windows direction.
What's the problem, the paint or the windows?
From what I can see about the paint, it peels off the ceiling, revealing a grey smooth drywall. And I don't particularly live in a humid environment so why is this bathroom so problematic.
Best Answer
I think at this point it's safe to say the drywall above the shower is shot, and now you're going to need to replace it all. While you're in there, install a proper exhaust fan. Yes, I know that's exactly what you don't want, and that you're trying to cheap this out, but that hasn't worked, and you've given "cheap" the full tryout. All "cheap" has done is nickel and dimed you to death.
Working with this bathroom as-it-is would require very different bathroom discipline. It might work for other people. It doesn't work for you (or other family members). You just don't have the patience. Get the exhaust fan.