I would suggest Park Cafe in Sylvan Park, Park Cafe boasts a perfect blend of simple southern comfort and big city flair. Located only minutes from downtown in Sylvan Park, it offers a refreshing alternative to usual Nashville fare with creative American cuisine and the relaxed feel of a neighborhood gathering place. Click here and see the pictures
Park Cafe Sylvan Park .
Another nice one is the Sunset Grill click here
Sunset Grill
Also the Tin Angel is often referred to as Nashville’s Original Neighborhood Restaurant, and in spirit it was built and is operated to be just that. A place where people can go for excellent food and service in a warm, friendly, comfortable environment, at reasonable prices, click here for fotos
Tin Angel there are many others like Samurai Sushi Midtown/Vanderbilt, Eastland Cafe East Nashville, I quiet like the Tin Angel myself. Hope this helps. Have a great time!