Something like this may work. Note the changed door positions so that anyone in the bedrooms can visit the bathroom without disturbing anyone else in the lounge !

ceramic if you have the budget

Hi! We are purchasing a house that has to have one and a half bathrooms demolished due to water damage from previous owner. We have gone around in circles but we've decided not to do tile because we are terrible at maintenance. We are at the point where we are seriously considering just the Swanstone surrounds. However, there is a local artist that does epoxy resin bathrooms and I am considering hiring her. I think it could be a little more expensive to hire the artist, but we could more easily also get the floors taken care of and also replace the counter and backsplash on the vanity, thus saving us money from having to replace that, too. Does anyone have any experience with epoxy resin bathrooms in terms of the maintenance and longevity? Thank you!

Kindly share the location of door, is it on the shorter wall or longer wall? Will suggest you the best option based on the info.