By default, the use of squared angles and straight lines tend to be naturals when it comes to interior design. Angled edges exist readily in both design and decor because, frankly, straight lines are easy to work with.
But when we bend those lines and shed the angles, we form a less common but much more interesting loop shape we generally refer to as a circle. Like your most eccentric friend, circles add a much-appreciated vibe to the room and help soften harsh corners.
Take a look at these pictures that demonstrate this effect, and I'm hopeful you'll be able to take something away from this look.