Block view, but allow sunlight from windows
Static-cling (clean window, apply with water and a supplied squeegee, no actual adhesive, peels off when you leave without a fight) "stained glass" plastic films are available. They look pretty much as good or bad as you make them look, which is mostly a matter of how carefully you cut the edges. I did a bathroom over with them this spring, and it's a huge improvement over the blinds it used to have. The particular version/brand I used was "ArtScape" and it was found most affordably via Amazon, though HD does carry some of the patterns, but at a higher price.