No problems at all. Worked very well for 3 weeks. OK, the spot is a bit hard to find though. Had to wait a few minutes at drop-off for the 2nd ride, but the return was absolutely awesome. I called the number and the driver was just 1 minute away from the door (at MIA) I gave him. When we arrived the car was about to be ready and within 1 minute it was right in front of us and running with no complaints at all.
This was the Best place to leave my car since August 18 till today Sep/13... Excellent customer service and very responsible.