Here's the last DIY project we did. I love it.
DH wanted to do a plastic surround but I vetoed it.

I put plastic film on the window for privacy. But I like the red oak in the backyard in the fall.

I haven't done mine yet, but plan on doing a clawfoot tub with shower curtain surround on ours because we will have a large window facing the street.

Forgot to post a pic for you to see what i was talking about. There are lots of style of clawfoot tubs, some more modern. I think the one i will be using is actually called a pedestal tub technically, but this is a pic of more a classic tub. Hth

Here is a link that might be useful:

Thanks for the ideas everyone. Now I just have to choose...

Hi. If you decide to leave the window in the shower, please just make sure it is well sealed and inspected regularly for cracked caulking and the like. I was pretty rigid about keeping mine sealed in my last house, and when it came time to redo the surround and I took the old tile and wall down, there were tons of frame rot underneath. Ended up having to remove the window. I missed the natural light, but not the hassle of keeping it sealed.