I have sewn in my dining room but now I sew in my sewing room upstairs. We do not have central air, either, but it is comfortable with one window unit upstairs and one down. Every summer, a group of teacher friends and I go to the lake...none of them quilt. I would love to sew there...it is a beautiful cottage...lakefront with a huge screened porch. I am just itching to sew there!