Here is a detailed map of Lawica/EPPO. It clearly says not to mistake it with Krzesiny.
DO NOT MISTAKE KRZESINY aerodrome; 13.8 km (7.4 NM) SE OF POZNAN / Ławica WHEN APPROACHING RWY 29
Aircraft flying from south are passing VOR/DME in Czempin and then head straight to DVOR located half-way through Lawica's runway to begin ILS procedure for runway 29.
The First Officer was woman so Polish media started speculating she was responsible for the mistake. It could have been captain though as a person sitting on the right side in the flight deck wouldn't be able to see Krzesiny's runway as it was unlit.
Special commission in Poland is looking closely into this accident.