This is a cargo ship adapted to the tourist transportation, the cheaper alternative to go to this place.
The trip takes 5 days , breakfast, lunch and dinner include, especially for backpackers. what can I tell you this is my company so good service and friendly staff.
You can go by boat or plane. There are several tour companies, we went on the most expensive and it was very comfortable. If you don't mind being thrown around a little, I am sure the cheaper ones are adequate. However you get there, it is well worth it.