Trattoria al Combattente, near the Porto Vecchio in the old town, is a reliable spot for lake fish at a fair price. The menu changes with the catch but typically includes lavarello with butter and sage, pike risotto, and a good fritto misto of small fish. The dining room is a single small space with wooden tables and a short wine list focused on Veneto whites.
Reservations are useful in summer; outside the peak months the trattoria is rarely full at lunch. The set menus offer the best value if you want to try several dishes; otherwise a plate of pasta and a piece of fish is a perfectly happy meal.