One drawing, several views. Box the floor area on the plan, then box each elevation. Tiles stay inside their box, and the strip along the bottom shows every view at once.
How elevations follow the floor. For each elevation you click its wall on the plan — left end first, as you'd see it standing in the room facing that wall. From then on its vertical joints are the floor's joints carried up the wall, so dragging the floor (or any linked elevation) moves them all, mirrored correctly on opposite walls.
Course height. The bottom edge of an elevation's box is its floor line. Linked elevations share one course height, so lifting the courses to suit a window on one wall shows you straight away what that does above the bath on another.
Guides & snap. Add guide: click (or drag) from one wall to the opposite one — you get the line, its centre, and a centre line square to it. With snap on, joints lock onto guides and box edges/centres as you drag, otherwise to whole millimetres.