Is Bottom bunk better than top bunk as you can sit & watch through the window from the bottom bunk?

I will be traveling alone from Beijing to Wudangshan. I have never traveled by rail. Trying to figure out which ones to choose - bottom bunk or top bunk in soft sleeper train. I would probably lie down only during night time but would like to watch out through the window (and by the window) during the day and enjoy the country side. Please advice. Thanks a bunch