I really like the look and the dark wall! Love the black wall - make it an accent wall? Hardwood floors with rugs for master bedroom. This is what my bedroom will look like when we move! But with blue walls and a black wall.
One way to mix patterns is to stick with a very simple color palette. While the curtains, rug, pillows and bench at the end of the bed are all a different pattern, they work together because they’re all grey and white.