Gluten-Free is on the menu, but the same kitchen also prepares what you avoid, so cross-contamination is possible. Tell staff what you react to, and ask how your dish is prepared before you order.
A cosy old-town café at the foot of the Mühlegg funicular known for its weekend brunch buffet, which directories and reviewers say includes gluten-free bread, plus gluten-free cakes in the afternoon. The café's own site does not mention gluten-free, so ask.