I have used Boston Preferred Care Service for a number of years and have been always incredibly satisfied with the service - punctual (usually 10-15 minutes early), professional and overall very nice people. The vehicles are clean and have bottled water available, as needed.
My latest experience, however, was by far the best and one which cemented my opinion and relationship with this service. I had returned from a long overseas flight (traveling for 24 hours or so) and after the driver dropped me off at my home I realized I had forgotten/left my cell phone with drivers license and a couple of credit cards either there or on the plane. I called the service and within 15-20 minutes they had contacted the driver who found the cell phone and delivered it to me that same evening within an hour or so.
Truly an exceptional driver and service and I highly recommend them to anyone.