I love that they direct you where to park and a bus is waiting for you. They drop you at your car and wait do you to start your engine to make sure your car starts in the cold. This happened to me - and they jumped my car on the spot. Very nice staff and reasonable rates compared to the airport.
You always have a place to park, and the shuttles run at decent intervals. All your shuttle drivers are friendly and helpful. The only thing I would suggest is have some covered parking.