Renting a car for a week can be a great option for travel. Localiza, the most popular car rental company for this area, offers rental cars for around $336/week on average.
Typically how long you can rent a car for depends on the inventory of the supplier. For Ciudad del Este however, it is certainly possible to rent a car for an entire month.
Typically, a monthly car rental in Ciudad del Este can be found for $1,438. You can find car rental deals to be on average $48 a day.