Good breakfast (great pastries, relatively mediocre accompaniments, some things are much too expensive), great atmosphere. Take a book and linger, or take a friend and gossip. Ranks among Helsinki's best breakfast places by default.
How can you resist Tin Tin Tango. It's practically a requirement, even if you don't have an appropriate trenchcoat. The music is lovely - from time to time you actually look around for the gramophone. Many a morning on many a dreary day has been past here. At times it's crowded, but not in an obnoxious way. The breakfasts are good, the coffee so-so, the soup quite nice. In any case, it's a requirement so go.