São Tomé and Príncipe — Currency exchange map

The São Tomé and Príncipe dobra (STN) is pegged to the euro, so euros are the easiest currency to exchange, followed by US dollars. Almost all services are in the city of São Tomé, with very few on Príncipe.
Card acceptance is limited, so it is practical to bring enough cash in euros. In São Tomé and Príncipe, listings let you exchange US dollars for São Tomé and Príncipe dobra directly with another person, in cash or by transfer.