Caffe Appassionato is a cafe on the basement first floor of the Shin-Marunouchi Building, connected by an underground passage between Tokyo Station and Otemachi Station. It serves coffee and breakfast, with a morning set that pairs a choice of anko butter or a grilled sandwich with coffee. It is used for a quick breakfast before boarding a train at Tokyo Station, and it opens early. The portions of the morning set and sandwiches are small.