Whale,
If this really concerns you, I would suggest you start researching this information. Spend some time on the internet and you can learn a lot about the living situation in Paris, or possibly somewhere outside the city. I wouldn't count on ALPA getting any more information than you can find out yourself. The company has given us very limited information, but maybe your sponsor will share this with you as well.
Bottomline: Spend a few hours searching the web and put yourself in a better position to make a decision if it comes to that. Don't count on ALPA doing any of the leg work. I doubt the lines will be very commutable, but there is always the option of crashpad living over there.