David,
I wonder if it might not be rather difficult to get the effect you are looking for without also having too much of a mirror effect on the outside of the glazing?! At least, I have never come across any full size one-way window glazing that did not present either a smoked or a mirror effect when viewed from the outside.
One alternative might be to put a blind board on the inside of the structure, say, half an inch to an inch or so behind the windows, either just painted dark grey or black, or, if you want create a trompe l'oeil effect, even with a printed image of a cabin interior glued onto it. If you leave it open to the interior below the lower edge, a suitably placed light source should create a light-in-the-window effect without any of the true innards being visible.
/Mattias
Edited By Banjoman on 14/09/2015 09:45:07