Mamie, when I used to organise school exchanges with rural Normandy- those issues were a big problem for our students. Some were expected to share a bed with the exchange student, others had to walk to the yard to use outside 'casy' with a wooden lid and a hole, and one of them called in great distress, because the house was just one big room for all to share, and a shower + WC in the corner - no walls, no curtains. We had to go 'rescue' her and ask one of the teachers to host her! Another was put in the barn to sleep, and had to walk a plank on hands and knees to get to the ladder that would take her down to use the toilet, in the dark, which was behind the chicken house.
We had to ask the teachers from the school (near Bourgtheroulde) to talk to prospective host families about the minimum requirements of own bed, in the house and with access to privacy for WC and washing!