The café in the Centre Culturel Suedois, based in a Hotel Particuler on rue Payenne in the heart of the Marais, is a little gem. In the middle of Paris the Swedes have managed to create a piece of Sweden (at least, this is what I imagine Sweden to be like)! The tables are covered in checked fresh-coloured table cloths, the furniture is made out of light wood or painted in fresh light colours, and it serves lovely sandwiches, tea and coffee at a reasonable price. The food is very un-French: carrot cakes, open Swedish sandwiches, meatballs, and so on. It is such a nice change after having eaten innumerable baguettes!
But the main attraction for me is the outside space — a big courtyard great for kids to run around in and a world away from the crowded sidewalk tables you find at most cafés in this city!