BertréeBertrée is a village of Wallonia and a district of the municipality of Hannut, located in the province of Liége, Belgium. It has a surface area of 2,78 km² and has a population of 414.WWW bertree.beGeographyBertrée borders in the north to Walshoutem, in the east to Cras-Avernas and Trognée, in the south to Poucet and Hannut, en finally in the west to Avernas-le-Bauduin.