If one likes the sound of Canton (in the past I found Canton speakers not engaging enough but I'm being told that has changed; first grade build quality, that much is sure), the new Canton CD3500 might be the thing for a room that requires a not too obstrusive design. As pointed out hereabove, you do need power cords.
http://www.canton.de/en-produktdetail-cd-cd3500wireless.htm
http://www.canton.de/en-produktdetail-cd-cd3500wireless.htm