Sounds like the tension rod would be easiest? I think so.
I do have a blank wall, we put a 1" x 4" lenght of wood close to the ceiling, painted it the same as the wall. Then stapled an older cream color flannel sheet to it. The sheet is easily pinned into. It has been wonderul.
Done this before the wall: Lay a bed sheet on a large bed, lay out and pin pieces to that. You can roll this up, and it can be spread out aain on the bed when you need to have it.
Still, I do like the tension rod idea! :thumbup:
Let us know what you choose to do. INfo helps others.
Julie