That restriction is the defining fact of this market. Inside the UNESCO perimeter the short-let model is closed to new entrants, which pushed value toward long-let, student housing and owner-occupation — and pushed short-let demand outward to Campo di Marte, Novoli and the Oltrarno fringe.
The centre’s stock is protected, vertical and often liftless, with Soprintendenza approval required for visible works. A palazzo floor is a heritage asset with a heritage maintenance bill.
Three universities and a large international-student population give the long-let book a depth that most tourist cities lack.