We usually stay in the 6th, but this time we plan to stay in the 7th, not too far from Invalides. So far, we plan on having lunch at Bistro de Breteuile and dinner at Au Bon Accueil. We'd like to find a cafe or tearoom that's open for breakfast -- not brunch, but just tea, coffee, and croissants. We're also looking for a pleasant cafe that's open late, as we enjoy ending the evening in a cafe. So far, I haven't found many that are open late in the 7th. Any ideas?