Photo by Ron Blunt, Design by Mary Douglas Drysdale, via Traditional Home
I think the inner small-scale dot pattern makes it. It's what makes it feel pretty and not too overwhelming despite the hefty dose of beautiful French blue toile. And the walls appear to be fabric as well - great way to push a bed all the way against the wall and make it feel purposeful.
I adore small rooms that are packed to the gills with goodness. Big scale in small spaces is a winning combination in my book.