3 aircraft and 3 cabin layouts, from the 72-600 to the 737-800. Pick one for its seat map, the best seats and the seats to avoid.
There are seat maps for 3 Aeroitalia aircraft here: the ATR 72-600, the Boeing 737-800 and the Embraer 190.
The Boeing 737-800, with 189 seats: 189 Economy in its main layout.
