Mangaratiba is a small port in the state of Rio de Janeiro. For tourists, it is mainly a place to catch a ship to Ilha Grande, as well as being the site of one of the most traditional beaches in the state.
Costa Verde have several daily buses from Rio de Janeiro, R$37.50 and about 2.5hours. Note that not all Paraty buses pass through here, so check the latest timetable online on their website or you may find yourself waiting for a while in Rio's bus terminal. There is a daily ferry from Ilha Grande, departing at 5:30pm, arriving around 6:50pm, R$15. By car follow the scenic coastal road BR-101.
The beach, popular with locals.
There are plenty of places to eat around the main square.
There are not many options for lodging in Mangaratiba, but you will probably only be sleeping here one night before getting the morning ferry anyway.