I've seen the previous posts on layovers, but I have some more specific questions.
I have a 7 hr layover at CDG, our flight gets in close to 1pm local. What I would like to do is take the train into town, possibly near Luxembourg or Notre Dame, walk around some, maybe go to Shakespeare and Co., then find somewhere to sit and read/relax. I've thought about either a coffee/pastry shop, or maybe buying some bread and cheese at a corner store (assuming those are plentiful), and having a light picnic. I'm thinking 2-3 hours of time in Paris, then back to CDG via train.
So the questions are: Are there small cafes, markets near those places? Any other location recommendations that would be good for this kind of thing?