I would never, ever recommend carpet for sewing room flooring. One thing you could do is stain your concrete floor. There's such beautiful stains available, and it is extremely inexpensive, compared to installing wood, laminate or ceramic tile. If you go online, you can view stained concrete flooring. Or, if you decide to spend more on flooring, plank tile (ceramic) that looks like wood is really nice.
In my great room, I have engineered hardwood flooring. It is very pretty, but it gets scuffed up (scratches). In other parts of the house, I have ceramic tile, and I really like it, except I am seriously thinking about staining the grout a darker color.
My sewing room and closet have carpet, but later this summer I'm going to remove it and either install laminate flooring or ceramic plank tile that looks like wood.