This place feels really genuine. It's never overcrowded but has a very loyal group of regulars. It's an ideal spot to have your breakfast or just drop by for a great cup of coffee during the day. It'll be impossible to not feel relaxed in this very calm cafe.
Include a stop at this unique cafe while you're exploring the east sides of Kungsholmen, maybe you're on your way to the city hall for example. You will notice that a lot of people are regulars and the owner is almost always present in the cafe.
I think the breakfast menu is available throughout the day, so don't worry about the time and sit down whenever.
Mon-Fr: 08:00-17:00