Most of the floor receptacles are able to be controlled from at least three switch locations. There would be two 3 way switches and a 4 way switch involved. Powered likely from one of the 3 way switches. These outlets are very desirable if you might ever sell.
How to Wire a 4 Way Switch
Here are some maybe more attractive covers available:
http://www.grainger.com/category/flo...ecatalog/N-cdf