Hi, do you have a floor plan which shows window and door openings ?

Best to contact the manufacturer of this tile.

Could you look at separating walls between the two? What else do you want to put in the bathroom? Probably the best type of tile is a white ceramic tile to blend the floor toilet with the floor. Do users have good vision (not elderly) as if there is a problem of using the floor toilet in the night, you might need a darker tile to delineate the floor toilet

You can use natural stone like marble for floor but do not use granite for floor at all as it is very slippery when wet. As for tiles do not go for glazed vitrified tiles for the floor for the same reason. ( floor becomes slippery once wet and may cause mishap) Go for ceramic anti skid tiles that are specially meant for bathroom floor. For wall tiles you can use whatever you like and then decide over the matching anti skid floor tile/ marble. Double charged vitrified tiles are usually used for flooring in rest of the house.