We were visiting Stockholm for a few days, a family gathering of three, and Josef's apartment was a great choice!
There was spare room for at least other two, but we very much enjoyed the space. The two beds we did not use are children's beds, though, and there is a very large sofa also. Location is fantastic and the apartment is beautiful and cosy. Inspirational even, as you can breathe an artistic atmosphere!
Josef was an excellent host, and we felt very welcome. You can count with a very effective check-in (if Josef is not in person, as it was our case), and full support throughout your stay (in our case, we just needed restaurant tips :).