Our master bathroom is the "orchid spa" in winter, when we get a few nights of below 50deg. Luckily we have south-facing windows in a large tiled shower area that is ideal for the orchids, and I can use the hand-held shower head to spray them when they need some water. Hopefully we're nearly in the clear as far as cold nights go. This picture was taken last year - there are a lot more orchids in there now.