Mine is in the middle of the room, too... I can swivel and/or roll my chair (hardwood floor) to reach the desk behind me (filled with stuff I use) or the small ironing board (an old tv tray with a June Taylor cutting board/ironing surface on top)...
I'm facing the tv and the door... lots of natural light but have to partially close the blinds depending on what time of day it is...
I USED to sew and quilt in the dining room... and that was in the middle of the room too!! ha ha.. (sorry, couldn't resist!)