Yvonne,
You sound like my wife. She wants to turn one of the spare rooms into a huge bathroom with the whole works. I'am quite happy with the tiny shower and half a tub we have now! The only advantage would be to move the washing machine from the kitchen to the bathroom and get it out of the way.
I forgot to ask when you go to France do you fly direct to Paris? Wondering what Charles DeGaule airport is like. We have been going through Gatwick the last couple of years but it is a very unpleasant place so were thinking maybe Frankfurt or Paris.

Barry