Sure, you're never going to get a table or even a chair out there. But if you open the doors wide, the narrow balcony acts as a rail for the rest of the room, creating a great big balcony, if you will.
Take this bedroom from UK's Channel 4, for instance. In the photo up top you can see that with the Juliette balcony's doors flung open, the whole room takes on an outdoor feel. Rather than step out onto a full-size balcony, this flattened version allows you to enjoy the interior space much as you would an outdoor space. Arrange a comfy chair there by the doors and you could read or nap away a warm afternoon "outdoors", in the comfort of the interior.