One of my co-workers just returned from Paris. She said they didn't know til the last day that the tip is included in the meal at most restaurants so they were double tipping the whole time. You might want to check your bill for that before tipping.
I heard its pretty good, just gotta constantly watch out for pickpockets. Especially on the trains and stuff, thats where my friend's dad's wallet was stolen. but besides that, no complaints.