5 aircraft and 9 cabin layouts, from the 737-800 to the 777-300ER. Pick one for its seat map, the best seats and the seats to avoid.
There are seat maps for 5 Garuda Indonesia aircraft here: the Airbus A330-200, the Airbus A330-300, the Airbus A330-900, the Boeing 737-800 and the Boeing 777-300ER.
The Boeing 777-300ER, with 393 seats: 26 Business and 367 Economy in its main layout.
The Boeing 777-300ER has First in at least one layout.