Flow of Feng Shui
In traditional Feng Shui, the goal is to maximize the flow of positive chi in an area. While you will probably not be able to detect the essence of the energy of a space, you can increase the feeling of flow in a room by paying attention to the way people and objects move through the space.
The flow you want to achieve is in the essence of the room. You want there to be easy access for people moving through the room, as well as in and out of it. You want objects to be able to move from their storage, into use, and back without adding to clutter. This kind of flow is a mixture of organization and design that focuses on removing blockages and allowing easy movement through every area.
You will be able to feel whether a room has flow just by walking into it. There are tiny currents of air that run through every space. We do not generally notice these currents, however using your intuition you can just barely perceive this air. The difference between greater and lesser currents will be translated into your mind as greater or lesser flow. As always, make yourself sensitive to the subtleties of the space.