4 aircraft and 6 cabin layouts, from the A319 to the A330-300. Pick one for its seat map, the best seats and the seats to avoid.
There are seat maps for 4 Brussels Airlines aircraft here: the Airbus A319, the Airbus A320, the Airbus A320neo and the Airbus A330-300.
The Airbus A330-300, with 295 seats: 30 Business, 21 Premium Economy and 244 Economy in its main layout.
The Airbus A330-300 has Premium Economy in at least one layout.
The Airbus A320neo, with 28" - 34" of seat pitch in Economy and seats 18" wide.