If you're worried about a big bed taking up too much space, consider painting the wall behind the bed a nice dark color. This will give the illusion of depth and make the room appear larger.
The brass bed often appeared in Victorian bedrooms. If you like the design but the finish feels a little too traditional, then get out your paintbrush. White makes for a soft and romantic aesthetic, or go for a bold and contrasting color choice to get a more eclectic look.