That looks like a really fine sewing desk.
Fpr years, I have been jealous of a friend's sewing room (20x24 with a walk in closet and its own bathroom) Her DH found her an antique oak "partners" desk, the kind that is about 7x8', with a leg hole that goes through it and drawers on both sides. He made an inset like yours. Yours is much more practical for those of us who don't live on a multi-million dollar ranch.