Why did Vespucci think that Lake Maracaibo looked like Venice, Italy?

Americo Vespuccio thought that lake Maracaibo looked like Venice because the aborigines who lived in the area built their houses on water. The aboriginal people called Añú have a tradition of living on water in houses made of magle wood. For this reason they are known as 'paraujanos', which means inhabitants of the coast of the sea.