I have a basement sewing room . Lots of reasons I like it in the basement... I have lots more room. None of my bedrooms has as much space. I can make the biggest mess and its out of sight. I had tons of fluorescent lights put in so its it brighter than daylight. Its also cool in the summer, and in the winter I use a space heater to supplement. I do run a dehumidifier in the summer to keep the moisture to a minimum. One other consideration... the weight of the fabric is not a concern in the basement.
I do have a TV and radio so its not so silent. One thing I do wish I had done was put a handsink in , but I can still add that.