Our flight out of CVG was early morning so we ended our Indiana/Ohio tour the night before at the Marriott Cincinnati Airport. It is very close to the Airport Terminal and the Rental Car pickup/drop-off locations, but far enough away to remain fairly noise free. This is a top class Marriott property. The restaurant serves very good meals, the bar area is comfortable and has a great atmosphere. The lobby area is large and very attractive, a pleasant place to sit, and there is a great friendly staff there waiting to help you. Our room was very clean, quiet, and the bed very comfortable, and there was a well outfitted working space in the room.
I have stayed at this hotel several times in the past, and will use it again in the future next time I visit Cincinnati.