Konstantin is located in Schwabach, Germany on Königspl. 21. Konstantin is rated 4.4 out of 5 in the category greek restaurant in Germany. ne on regional cuisine at Konstantin (Constantine). Located in Straubing, its contemporary, yet casual cafe-style setting is ideal for a meal with family or friends. Konstantin serves breakfast with such fare as scrambled eggs with bacon, cream cheese and bratwurst. Guests can start their dinner course with a fresh salad or cold cucumber soup, and move onto a main course of wild boar with grilled potatoes, rump steak or a burger. onstantin has a variety of drinks, including spirits, cocktails and apŽritifs. It offers brunch on the weekend. This restaurant features a cafe that serves coffee, tea and confections.