5 aircraft and 5 cabin layouts, from the 190 to the A320. Pick one for its seat map, the best seats and the seats to avoid.
There are seat maps for 5 Bulgaria Air aircraft here: the Airbus A220-100, the Airbus A220-300, the Airbus A319, the Airbus A320 and the Embraer 190.
The Airbus A320, with 180 seats: 180 Economy in its main layout.
The Embraer 190, with 29" to 33" of seat pitch in Economy and seats 18" wide.