Germany
Try the Neckarmüller restaurant and bar at the Neckarbrücke (Neckar bridge) - sit inside for hearty German food including the local Swabian speciality, Maultaschen (literally "mouth-bags") like large Ravioli with a spinach based filling, or sit outside at the river's edge and sip the house brewed beer into the (hopefully) warm summer evenings.
Right beside the Neckarbrücke.
Search Been there