Tigerbump - not sure if you mean how did I identify it, or what I thought of it?!
I knew about it just from asking around and the internet. I did all my preparation with a homebirth midwife (but decided fairly early on that I couldn't cope with a homebirth as DS1 had had respiratory distress at birth) and this was the clinic she recommended as being the most open to natural birth. I live in Montpellier and there are basically 2 private clinics or the public hospital for higher risk births.
What I thought of it: I was dreading the whole experience as the French system is so different from NZ, where I had DS1. I really struggled with not being able to have my own midwife properly with me, and with being left alone for a considerable time with DH once they'd hooked me up to the monitor - problem for me is that I didn't want an epidural, but they're not used to dealing with women in pain and providing the support you need.
Apart from that, the obstetrician was absolutely amazing, the clinic midwife less so but ok (but obstetrician wasn't very happy with him as thought he was too bossy!), and the after care was absolutely fantastic - private room with tv, phone, bathroom, mattress for DH, decent food with choice of menus...
Some of it depends where you fit on the natural birth etc spectrum - the other thing I didn't like was that they tried to make me give DS2 formula supplements on the 2nd night and I had to argue hard to get out of it (mainly by pushing the fact his older brother had a serious dairy allergy) - despite supposedly being a clinic that promotes breastfeeding.
Where in France are you? I think the clinics vary greatly in their approach, so it's a question of finding the one that most closely meets your needs I arranged for an appointment to talk about my concerns and find out what their approach/protocols would be in certain situations. Is this your first baby?