How many days should I spend in Florence?

Two nights, one and a half days for the city itself — then use it as a base or move into the countryside. Florence's core is small and walkable, and the essential list is short: the Duomo complex, the Uffizi, the Accademia if Michelangelo's David matters to you, and the Oltrarno for the workshops and better dinners. People give Florence four days and end up repeating themselves. What Florence is genuinely great at is being the door to Tuscany: Siena, San Gimignano, the Chianti road and the Val d'Orcia are all within an easy reach, and that's where the extra days belong.