You can use self cleaning coatings , and then using low pressure flow of water you can clean stuff. Then you can use a robot walking on the ceiling(mounted/usi

You can use self cleaning coatings , and then using low pressure flow of water you can clean stuff. Then you can use a robot walking on the ceiling(mounted/using vacuum) on the ceiling , that can control the angle ,direction and force of water , so you know water flows only down ( assuming your floor is water resistant). Then you use some scooba like robot to clean the water from floor. you might even spare the robot , and just use some water pipe the pushes water down , and stick it to places you want the water to flow down to , before you want to clean. moving stuff from the bathroom: i think that in general "moving stuff" is quite complex. but if the stuff you want to move is is placed on removable plastic surfaces , that have some sorts of easy visual structures to ID by robots(maybe even a small barcode) , this becomes much easier for the robot.