My "Studio" is 3/4th of the basement, and is called a studio because I consider myself a fabric artist. That is all that is done in the studio, creating artwork, be it a quilt, a wall hanging or whatever I decide to do with my fabric. A painter always has a studio, not an art room. You can call your sewing area whatever you want, after all it is YOURS. Too many people downgrade their "craft" as simply sewing, and don't consider themselves artists. Many times we sell ourselves short. So if you want to work in a sewing room, fine, if you want to create in a studio, all the better. After all it is just a word, but what we do with/in it is artistry.