Airplane Airbus A320-200 Air Berlin with 2 classes and 180 seats on board. Use airplane seat map to find which ones are more comfortable and which should be avoided.
Seat 3A has a well aligned window for great views of Mt Etna for the most common take-off direction from Catania. Of the extra leg room rows for which AB charges a premium, Row 3 seems to have more room on top. On my flight in late March 2017, most of these rows only had 1 or 2 passengers per side.