Outstanding service by Hellen and Luis Lopez, both from Collins Ave. SIXT office. We've got actually the best car from the range (bmw x5, instead of jeep cheeroke) .Hellen has arranged the best possible pricing and timing. Serviced us at 10 points. Been pregnant at 8th month and still doing her best job at Sixt office ! Luis, her husband, has been very acommodating too (worked out our extension and tank re-fill). Would come back again when our family's back in Miami this year.