Tortuguero is a city in Costa Rica.
Tortuguero is only accessible by boat or plane. Hotels in Tortuguero have boat service to a small city (about 2 hours away) which can be access by car/bus.
You can reach the small town of Tortuguero if you staying at the Mawamba Lodge (it is a 10min walk). If staying at the other lodges, a boat ride will be necessary.
The lodges in Tortuguero usually include (or have the option of) giving tours around the national park, a walking trail, turtle watching at night, or other activities.
Tortuguero National Park