Another recommendation for the Wow Airport Hotel. Nothing particularly spectacular but the rooms are fine, and it is far enough away that I was not bothered by airport noise.

The hotel is close enough to the airport that the first time I stayed there I actually walked from the terminal to the hotel but I would not recommend doing so as part of the walk is along a busy road without sidewalks. The metro is an easy one stop ride and the shuttle back to the airport is quick.

There's nothing much in the neighborhood except for some restaurants and a convention center which was fairly desolate when I stayed, but it's fine for a layover.