Le Pain Quotidien
The Belgian quarter bistro / bakery "Le Pain Quotidien" is located directly at the Römerhof and is also open on Sundays. The fact that there is a healthy, fresh breakfast / brunch with delicious baked goods has quickly got around and is especially popular with families. In summer there are several outdoor seats where you can enjoy lunch or an aperitif in the sunshine.
My tip: Olive rolls