At the south end , boat cruises start out from Peschiera , Sirmione , and Desenzano , particularly recommended for dramatic views of the east shore 's mountains and the beautiful Punta di San Vigilio , with its little church and 16th-century Villa Guarienti .
Boat cruises leaving Peshiera cost about 40 dollars , while cruises departing from Sirmione and Desenzano cost over twice that much .