Sometimes a coffee table that isn’t the standard height or width is exactly what a room needs. In this instance a very low coffee table creates a crisp horizontal plane in the foreground offsetting the long horizontal line of the credenza in the background. A higher table would have blocked the view of the credenza and competed with it; the varying heights add interest.
If you don’t want the coffee table to be the focus of the room choose one with a glass top and a finish that blends with others in the room as in this example. This will keep the eye interested in all the items in the room not just one layer of the design. Coffee table metal bases with glass tops are another good choice to keep rooms feeling open. They’re also great when you have a special rug and don’t want to block views of it. Keep your glass cleaner handy though as there is no way around fingerprints.