Yes, the majority of hotel bookings are fully refundable if you cancel prior to the hotel's cancellation deadline, which is often 24 or 48 hours before your scheduled arrival. If you booked a non-refundable reservation, it might still be possible to cancel it and receive a refund within a 24-hour period of your booking. Enter dates in and click on "Search", then you can use the "fully refundable" filter to review the best options available near President Getúlio Vargas Square.