There are a number of nice, pleasant and good cafés in Bamberg. However a good Cappuccino is certainly up to ones personal taste but the coffee used here is very well done. Both the Kaffee Creme and the Cappuccino have been so good I didn't need to add any sugar.
And although the Café is in an alley below the Dom (Cathedral), they have tall large windows making it a bright and pleasant atmosphere. You'll pass right by this on your way to the Dom Platz.
They have a few gluten free options as well in case you need that. It's hidden, small, and worth the stop.