The Best Western The Mainstay Inn is conveniently located across the street from the Newport Grand Casino, in addition to being one mile from historic downtown Newport. Stay with us and you will find comfort in one of our 165 spacious and luxurious rooms. Children under 12 stay free in the same room as their parents. We feature an outdoor swimming pool and free parking, along with a full service restaurant where you can enjoy fine dining or relax and unwind at our lounge that is open seven days a week. The Best Western The Mainstay Inn is just one-quarter mile from Gate 1 at the Newport Naval Base and Navy War College. We are within a few miles from beach areas, the Naval Undersea Warfare Center and stunning Newport mansions.