Net curtains or lace curtains?
You can ask for either in shops and you will be served. I use the term "net" but remember my Nan would say "lace". (also remember lace doilies) Maybe its generation thing ? Oh, take notice of ANN W and buy white, they look clean...
Looking for 2 story curtains/drapes?
IKEA has curtains that are 118 inches long, but that probably won't be long enough. If you know someone who sews, you could always sew two curtains together to make them long enough. Otherwise, you'll probably need to find a window treatment business...
Is it tacky to put a bed in front of a window?
I do it all of the time and it looks awesome particularly when you use the window treatment to glorify the bed. You can really play up your bedding and linens by creating a window treatment that coordinates with the bed treatments. You can add height...