Several properties I've looked at in Paris have this for the description when it comes to the bathrooms. There's a more detailed description, too, but it makes it even more confusing. It reads:
"To adapt to the American standard, we have converted the European bathroom information. The original information is : - Number of European bathrooms : 1 (can be with or without toilet inside) - Number of European shower rooms : 0 (can be with or without toilets inside) - Number of toilets : 1"
So, does this mean there's a full bathroom and a half bath or just one bathroom total?