This is probably the spendy version of "what to do" but it might be a good long term solution, if you're planning to be around the house for a while. In my parents' house, when they bought it, was a tub--just a regular, insert tub. Not a full one, up the sides; just the tub. It had a shower and such, and they have sliding glass doors, which obscure the view out the windows when, say, someone is using the toilet. They have two windows facing the street, which would look really dopey if they were removed. Their shower surround is Corian, or another solid-surface product. I remember when they bought the house, 20 years ago, how amazed they were that someone would put THAT much Corian into a bathroom--but the walls of the shower, all the way to the ceiling, are Corian on the three sides that are not the glass doors. This means, also, that the window sills are corian. They are caulked at the seams. My parents recently got new windows, and they got etched glass or clouded glass or something to that effect--anyway, it affects the glass and not the window. They don't have to worry about clings getting grimy and yucky, and while their windows used to be double hung, they're now the kind you can rotate out...so you can open them when you're showering, get the steam out, and not have people able to peek in at you. Anyway--that works well for them, provides privacy 100% of the time, and is not a hassle to clean. But, like I said, it's an expensive option.