Spending 5 to 7 days in Tuscany provides a balanced and rewarding timeframe to experience its primary highlights without feeling rushed. This duration allows travelers to spend a couple of days exploring Florence's museums and architectural wonders, followed by several days renting a car or joining tours to discover the rolling hills of Val d'Orcia, historic Siena, medieval San Gimignano, and local wineries in the Chianti countryside, balancing cultural sightseeing with relaxed pacing.