Northern Blood

I think I've acclimated to the subtropical climate of Florida pretty well, but there are still vestiges of northerner in me. The last few nights when the temperatures have dropped to chilly levels, I've opened my window and slept in a pleasant, under 15 Celsius (60 Fahrenheit) room. These have been the first times for a long time when I've actually slept solidly through the entire night. I guess I should be looking for an icebox I could convert to a bedroom...