Gray rug and walls with a white bed can also be a glamorous home decor idea, provided it is contrasted well with white curtains or grey walls, just as this particular room. I would add some bright yellow to add a happy warmth to it!
Again, I think I would want to go darker on the walls... The white trim, ceiling, canopy, bedding and light carpet and bright windows will help balance dark walls and furniture. I think I'm gonna do it!!