Why this place
Ilhabela
Ilhabela is not one continuous resort strip. The ferry-side west coast has the easiest services and beaches, while places such as Castelhanos and Bonete reveal the island’s rougher Atlantic Forest character through 4x4 roads, trails or boats. Waterfalls, sailing and caiçara communities make it a strong nature destination as well as a beach escape.
Start by deciding whether you want restaurants and the historic Vila within reach or a quieter south-coast beach stay. The island's west-coast road links its main services, but a hotel described simply as 'Ilhabela' may still be inconvenient without a car, driver or an agreed transfer. Compare the actual journey from the São Sebastião ferry terminal and where you will eat after dark.
Castelhanos and Bonete are not two ordinary beach stops you can squeeze into the same afternoon. Castelhanos has regulated 4×4 road access through protected forest; Bonete requires a serious, separately planned hike or a sea-dependent boat journey. Check park registrations, access windows, operator arrangements and a confirmed way back instead of trusting a generic island-tour description.