Garda’s most popular resort juts several miles into the southern waters of the lake on a narrow peninsula of cypress and olive groves. Despite an onslaught of visitors, Sirmione manages to retain its charm. Vehicular traffic is kept to a minimum (the few motorists allowed onto the marble streets of the old town are required to switch off their cars’ engines at traffic lights). The emphasis is on strolling, swimming in waters warmed in spots by underwater hot springs, and relaxing on sunny hotel terraces. One caveat: You may find Sirmione to be less than charming in July and August, when the crowds descend in full force.