I think we all understand the desire for a sewing space that is a bonus little nook close to other people for company, and s large area where we can spread it all out, make a mess, get away by ourselves, and get lost in creating. Does anyone else want or need the space that you're wanting to carve out for sewing? I can tell you I have a fairly big sewing room/guest room (12x15) with natural night and I love it. I used to have a tiny craft room under the stairs of our basement and the lighting was all artificial. It wasn't so good for my mood but it kept craft clutter away from the visible living areas of the main level. gave that up to a son who likes it as a gaming room. If you have it to spare, and no one is against it, I say enjoy it. You'll be far more relaxed and productive if the room is inviting.