Galesburg has just a few spots worth stopping for. I'd skip the Packinghouse. Landmark Cafe and Creperie is highly recommended (Seminary St. district, also, in that area Chez Willy is okay). Inkeeper's Coffee, just a few blocks away on Seminary, has great coffee and hot beverages, and some good food and desserts. Other than that, not much there.
41 S Seminary St, Galesburg, IL 61401