Popular from the start, when it was called "XandO" (pronounced "zando"), Cosi by any name is a welcoming place in the morning for a coffee drink, and even more inviting for a cocktail later in the day. Men: You'll see a lot of cute women hanging out here, drawn perhaps by the make-your-own s'mores and other delicious desserts. Cosi also serves sandwiches and soups. The music is loud; the decor a cross between bar and living room.