The 4th floor Beverly Hilton hotel room where Whitney Houston died is officially off the radar -- after hotel staff removed the infamous door number ... 434 ... and TMZ has photo evidence.
Sources tell TMZ, the number was removed shortly after she died -- after scores of prospective hotel guests called to request the room.
A rep for the hotel tells us, the number was removed because the room has been taken out of circulation. So far, there are no plans to make the room available to future hotel guests.