Bauernwirt has great recommendations on the Gluten-free in Graz FB page. We visited and our celiacs enjoyed the Schnitzel, though not as much as Gasthaus zur Linde, our favorite.
Online menu specified that anything is available GF if calling ahead, and reviewers on FB report no contamination. Note “Auf Anfrage / Reservierung auch glutenfrei” on the menu: https://bauernwirt-graz.at/speisekarte.php
— Somewhat
— Gluten-free items are marked on the main menu
— Some
— Good