Darwin Island is not a place where visitors can stay overnight. It is not possible to stay overnight on Darwin Island because it's a protected area that lacks infrastructure or accommodations for tourists. Darwin Island is best explored by liveaboards, which offer diving or day excursions on the island. Overnight stays are usually spent in inhabited Galapagos islands. The regulations were put in place to protect the fragile ecosystems on the Galapagos Islands and reduce human impact. If you are planning to return soon, please check with local tour operators or the Galapagos National Park Authority for updates and changes.