When Melanie is in the elevator, the music playing is the original 'Fantasy Island' theme song.
The iconic house in the film is called the Trette Residence, in Navodo Bay, Fiji. The filmmakers used CGI to add the tower and some other elements on and near the house, including the rocky hill next to it. The house and 60 hectare property was on the market in 2017 for US$8.8m.
The movie is a reimagining of Fantasy Island (1977) in a horror genre, inspired by The Cabin in the Woods (2011) and Westworld (2016).
Dave Bautista was in talks to play the role of Damon but had to drop out due to scheduling conflicts.