Bon Jour K3n,
I use a quilt curtain in our home in Ohio as a 'warm wall' provider, only I cover the windows on a former sunporch now used as a guest room.
I hung it on a black wrought iron decorative curtain rod using shower curtain clips so it can be easily slid open or closed. Every few months I turn it 90 degrees to shift the weight on the fibers. It works great and our guests are intrigued with the concept. I think a pretty quilt over your door would be a wonderful decorative accent. Unfortunately we are traveling at this point in time, or I would send you a picture.