This is one of those films that just about holds the attention for its duration but which you start forgetting even as the end credits are rolling. I found it mildly engaging but psychologically lightweight and I honestly can't think of a single aspect of it that was striking, unusual or memorable. It's a solid, efficiently put-together drama, but there was nothing in it which would compel me to actively seek out more of Francois Ozon's films.
As the previous reviewere suggests, this is indeed an empty film. There have been other films, and novels, about young women who turn to prostition, and these can have psychological power. Here, though, there is so little with which to engage - including a ropey twist to the plot - that one does not much feel like expending more time in writing about it. For a while, it seemed as though Ozon's name being attached to anything meant that it is worth a whirl, but recent experience makes me now doubt that.