Chinook RV

I had an American Cruiser that I added a porthole window in and it made a big difference in the bathroom. I was wandering if anyone had added one in a Chinook bathroom or if anyone would recommend against it?

There is already a ceiling fan in the bathroom. I don't feel it is worth the hassle, since you will need to cut thru two layers of fiberglass to put a porthole on the side because the bathroom is a module within the Chinook body.