A floor lamp nestled against a window is a smart substitute for daylight so that when the sun goes down an ambient glow will pour in from a similar direction to balance the central light overhead.
When hanging a light over a table or a kitchen island 28 to 34 inches is the recommended distance from the bottom of the light to the surface of the table or island. However the size of the light makes a difference. In general a smaller light can be moved lower and a larger light can be moved higher.
A perfectly lit room has three basic layers: overhead lighting task lighting and accent lighting. This bedroom pulls all those together — the chandelier for overhead bedside reading lamps as task lighting and accent lights above the headboard and artwork.