Some pics of our tiny bathroom (shower / toilet combo). We fiberglassed by hand because of the tiny space and odd angles, then finished with marine paint. It was a very messy process, but one that we don’t regret. The teak wood bath mat was the final touch and fit the dimensions almost perfectly, just needed to cut a sliver off to fit the toilet. We’ll put up a shower curtain as a temporary solution until we can build a proper door (and frame). I can’t wait to take my first shower in there!
The kitchen sink drains through a tube into the shower, then straight down into the grey water tank. I thought that was a clever idea which made plumbing simpler.