We just moved to a new apartment and need to get curtains for the children's rooms. I hate curtains, but the sun is currently up before 5:00 am and setting very late so we need to block the light. Roller shades aren't possible in these windows. So my question, what length of curtains would you put in, knowing that each window has a radiator under it. Short? Long to the floor? A better idea? This is a rental so we don't want to go wild and crazy.