Tigre's huge delta region is dotted with dozens of accommodations, including camping, B&Bs, cabañas (cabins) and beach resorts. Since many are reached only by boat, meals are often provided. If you opt for self-catering you'll need to bring all your own supplies, including drinking water.
Tigre's tourist office has information on all accommodations and many are listed on its website. Book ahead on weekends and holidays, when prices can rise significantly.