In Paris intramuros, you can have a 1 or 2 bedrooms apartment, approx 50m², variable according to where it is in the city (some quarters are really really more expensive than others). It may be cheaper in the suburb...or not.
Other big cities in the country are usually expensive too, especially in the south. There is really a difference with the more average cities that are more affordable (I can't say how much).
Other big cities in the country are usually expensive too, especially in the south. There is really a difference with the more average cities that are more affordable (I can't say how much).