My couch is one of my favorite pieces in my apartment. I have a velvet love seat that matches my moody, midcentury-modern-inspired interior style, but I’m convinced the little legs that elevate it off the ground are the real game changers. I live in a one-bedroom in Brooklyn, which, like your typical city apartment, is tight on square footage. The thought of getting a sofa that sat flat on the ground only seemed like it would make my space feel smaller. After talking with AD PRO Directory designers, I realized there’s sort of a science behind this thought. “Furniture that sits flat on the floor blocks your view across the room and obstructs pleasant dappled light that may shine onto the floor throughout the day,” says Leah Alexander , founder and principal of Atlanta interior design firm Beauty Is Abundant .…