France
What licence do you have ?
If it is JAA then there should be no issue. But if it is CAA you need to get a validation from the DGAC (the forms are online)
If it is FAA and you are EU resident then it is no go.
The language is only a slight problem as you can quickly pick up the circuit speak but you lose some situational awareness if you can't keep up with everyone else in French.
As said elsewhere it is great in France, reasonable landing fees, edible food and great scenery, just don't try and get fuel at lunchtime