I sew in a very small corner of my dining room. The dining room table does double duty as a layout space as well as for eating. I just remove the flowers (or centerpiece) and it's all set.
But here's the other side where all my sewing equipment resides, and I mean everything except for my fabric stash, which resides in a cabinet in my bedroom. The room has a cubbyhole (maybe meant for a sideboard. It's 48 inches wide.
My work table (Ikea) has a side table pullout, which was probably meant for a computer but is perfect for my sewing machine as well as a small cutting mat. My display wall is an old white-ish bedspread that I stapled to the wall. It's so useful and can't imagine life without it.
My threads and pinup wall is opposite my display wall and is very crowded right now. Maybe a redesign is in order!?