Spent one night at the Newark Marriott, as we had to catch a very early international flight from Newark Liberty Airport the next morning. We arrived in the late afternoon, and our room was ready and waiting. It was spacious, clean, and surprisingly quiet, although right on the airport grounds. Staff were friendly and helpful. There was a gym off the lobby, and a bar/restaurant, but otherwise, there's little to do on site. Of note, you really cannot walk anywhere from the hotel. If you don't have a car, and you want to leave the hotel grounds, you must take the free shuttle to the terminal or call for transportation. Per staff, the shuttle runs every 20 minutes, 24 hours a day. We spent some time in the lobby in the early evening, and observed that it ran almost exactly on schedule. When we went to the lobby with our bags at 5:00am, the bus was at the front door, ready and waiting, as was a line of passengers. The driver helped us load our luggage, and we were at our terminal in about 10 minutes. It was a great way to ensure that we caught our flight without battling early morning traffic.