The best position for a bed in your bedroom depends mainly on your auspicious/inauspicious directions which can be found by calculating your kua number.
Calculate Your Kua Number Here
http://www.smilingbamboo.com/feng-shui-kua/
And a few more tips: try to make sure that the bedhead is against a wall (stability in life) and not 'floating' (lack of stability in life) in the room. Your head or feet should not point directly at the door, this is how the dead are laid out.
Hope this info helps 
Well if you have a REALLY big room I see a bed in the middle of the room BUT if you your room is medium or maybe small then try cornering it.If you corner it put a tall vase with a plant coming out of it like this one:
http://www.kaccents.com/Pictures/1567.jpg
References :
Not facing the doors like mine.
References :
Facing a door is ok; you don't want it to face any mirrors if you can avoid it.
References :
Place you bed against a solid wall.
You can see the door when you are sleeping.
References :
http://www.master-feng-shui.com/feng-shui-bed.html
The best position for a bed in your bedroom depends mainly on your auspicious/inauspicious directions which can be found by calculating your kua number.
Calculate Your Kua Number Here
http://www.smilingbamboo.com/feng-shui-kua/
And a few more tips: try to make sure that the bedhead is against a wall (stability in life) and not 'floating' (lack of stability in life) in the room. Your head or feet should not point directly at the door, this is how the dead are laid out.
Hope this info helps
References :
http://www.smilingbamboo.com
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http://www.smilingbamboo.com/feng-shui-articles/