Tub Surround with Window

[Dan Hoehn]

I seam to always have rentals with windows over the tub, and am conflicted every time I go to remodel because I can never find a tub surround that looks decent and I hate cleaning grout. All I have found in the past is to Tile, or use something like FRP panels that looks like a gas station bathroom.  What have you guys done for your rental properties with windows over the tub. Are there off the shelf tub surrounds that can be cut for window openings? If so, could you point me in the right direction. Thanks

Here is a picture of the current bathroom I'm working on. Thin plastic panels were glued to the wall initially.