Sleep is often in the media. You can always find an article telling you to turn of your electricals an hour before bed, get 8 hours sleep (no more no less) and avoid big meals before you have your shut-eye.
Your bed is a private place and somewhere that you should be able to escape to and truly relax. If you are going to spend a bit of time and effort in making a room look and feel good then do so in the bedroom. After all, you might spend most of your time in there, even if your eyes are shut!