A lot depends on the service. After a very positive outlier 3 months ago, we experienced another complete failure on Tuesday and therefore left the cafe without ordering. When I asked the hipster waitress what was gluten-free on the menu, I got the following answer: "Everything that looks gluten-free on the menu is." Yes, definitely... The gentleman came to our table twice, actually to bring the allergen card. Instead of a card, first there was the statement "There can still be gluten in everything" and then "We're not actually an allergy cafe here". We did not receive an allergen card. When we then said that we wouldn't eat here and that this had to do with his performance as a service person, the following comment came: "I don't know what your problem is." There is nothing to add to that. Unfortunately, these service staff at Mezzo seem to be let loose on the guests without any training. His attitude did the rest. I give the two stars for the two service staff 3 months ago who did their job really well. Unfortunately there is no continuity in this regard in the Mezzo.