I think that the objects don´t have energy positive or negative, we are, the people, who we think that an object is good or is bad for our state of mind. For example, to put the bed next to a window, can be bad if you like to sleep with many darkness, but if do you like many the sun, this is the best site to put the bed.
I don´t know anything about the Feng Shui, and I don´t know anybody who has tried it or believes in it.
I don´t know some house designed according to the principles of feng shui. for example, me bedroom have a little TV, and I thik that it´s positive, because I like to see the TV in my bed.