Complex sentence: Although there were 160 churches plus 20 monasteries and convents in the city, there was still opportunity for work: the people were poor and uneducated; their houses were in need of repair.
Split into simpler sentences: Although there were 160 churches plus 20 monasteries and convents in the city, there was still opportunity for work. The people were poor and uneducated; their houses were in need of repair.