By that I mean, whether you book ahead of time, pay ahead of time, or do anything ahead of time, many hotels in France give you what they want. We booked an Executive room, but put into a Standard. After an argument (maybe that's what they mean by standard) we were switched to what we originally paid for the rest of our stay. No compensation, no apology. In fact they made checking out all the more difficult. My advice: pay after seeing your room (which you can only do at low season), because they are nicely done and the location is great. A very typical French experience.