Inset also appears to work fine:
wikitext = StringTake[WikipediaData["Ariguani"], 105];
wikitext2 = StringTake[WikipediaData["Puerto Triunfo"], 67];
GeoGraphics[{EdgeForm[Black], Polygon[Entity["Country", "Colombia"]], Red, PointSize[0.05],
Point[GeoPosition[ Entity["City", {"Ariguani", "Magdalena", "Colombia"}]]], Blue, Point[GeoPosition[
Entity["City", {"PuertoTriunfo", "Antioquia", "Colombia"}]]], GeoLabels -> True,
Inset[Style[Text[wikitext], Red, 12], {-71, 8.5}, Automatic, 10],
Inset[Style[Text[wikitext2], Blue, 12], {-74, 4.5}, Automatic, 10]}]
Cheers,
Marco