For me, the hotter the shower, the better. Yes, I get condensation on the mirrors but generally I open the exhaust fan and it goes away in a few minutes.
About the condensation in the bedroom slide area. I think it's our body heat excaping out the covers into that area that causes it and then it's on only very cold nights. Dual Pane windows help but the corner trim pieces still get damp. Again, this is only on very cold nights.
Back to the shower. Use the fantastic fan or the exhaust fan if you didn't get the fantastic fan option.