Something like beintomrom with us as well. Only we didn’t screw the curtain rail to the ceiling but mounted white rods from Ikea a bit lower, about a CD jewel case width above the lintel. Without fabrics on the walls it was too cold for us and the sound in the house was too echoey. Now it’s nicer. We have curry-yellow crinkle curtains made of cotton, they are thin, light shines through well.