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.