I love how you can find a quiet corner right smack in the middle of the city. The Palais Royal is practically across the street from the Louvre, yet you wouldn't guess it. It's a little hidden, but all the old buildings and arcades makes a nice buffer from the rest of the city. The mornings are best as the tourist hoards aren't yet out and about, a couple cafes might serve you a petit dejeuner if you know where to seek them out, and lots of families are out playing in the jardins. The city has an almost dream-like quality to it in the gray and fog, which is practically an everyday occurrence.