Quite good. Entertaining, a bit short, but it was fun to solve it. It needs a REPLAY button; I somehow managed to find the solution on my first attempt (following some "hints") so I had to refresh the browser to replay it and get all the rooms.
By the way, last room is a b:)ch.
(And had I seen this game a few days before, maybe I would have copied its colors for making my new Newgrounds user icon)