Northern Europe Cafes/Roasters

My parents are going on a trip to Northern Europe soon and will be hitting Amsterdam, Copenhagen, Helsinki, Oslo, Stockholm, and Tallinn​​​​​​​​​​​​​​​​. Anyone have 1-2 recommendations on their favorite cafes/roasters in each city?

Already know about Dak and Friedhats in Amsterdam, not super familiar with roasters in the other cities. Thanks!