If you do have a lot of time to wait in line (it could be more than an hour) then it is a nice place to check in to for brunch.
The service is great, the friendly staff will take care of the crowd outside by giving away some brioche and warm tea. Once you do get inside, you're welcomed by a small juice shooter and introduced to daily specialties.
The decor is nice and it is more than just a breakfast place I'd say. The food is great too, a little bit too salty for my taste, but very generous on portions. Yes, I'd come there again maybe in summer and bit earlier so I don't have to wait so long in line.