Food Safety Report: Ristorante Caffè Saraceno, San Polo, Venice, Metropolitan City of Venice, Italy 10 months ago • details Comments Comment Suspected food poisoning. Symptoms: Diarrhea, Nausea, Vomiting, Fever, Stomach Pain, Cramps, Chills, Headache Suspected source: Food poisoning Onset: Less than 4 hours Duration: 4 to 12 hours Food poisoning from meal at this restaurant.