There is at least one pic on the
DCL site and probably more on the passporter site.
Yes, it is open for all unless reserved for a party. It is not a Cafe, more like a private room (maybe 50 standing people) with a bar. There was a piano in the corner if needed. One can access it it by one midship elevator or one stairwell from deck 12 (Deck 13 is the Teen Edge. Outlook is above that on Deck 14 so, I would recommend the elevator.
Outlook looks forward from Deck 14, The view is a little blocked as the front buildings towers get in the way and the side walls block the side views, still a nice quiet place to go sit relax and see the view.