Nicola Guiducci (left), Oliviero Leti and Lorenzo Cherubini alias jovanotti at La Casa dei Demoni. .La casa dei demoni (The house of demons) is in a private apartment of seven hundred and fifty square meters, ten minutes from the Duomo. The owner is Oliviero Leti, PR and event organizer who has decided to turn his apartment into an open place, where he host a selection of very few guests.