If the toilet is in you bathroom and you need several visits a day, i would think you would need a camping toilet or something, not because the loo won’t be there but because you would need to keep kicking the workmen out to use it and depending on what they are doing, maybe the door won’t close or there will be holes in the floor and so on. I wouldn’t think it would take as long as 10 days though....maybe ask how long you won't be able to use the loo for and then decide what you need to do.