Lunch and a cruise? You bet. Three times each day - at 12:00, 14:00, and 16:00 - Wratislavia departs from its harbour on the Oder and glides along the river, offering splendid views of the city and a hot buffet. At 17:30 the vessel docks for the night and a standard-menu restaurant opens, serving traditional fare with modern elements courtesy of chef Piotr Gietner. Now this is what we call eating on the water.