Stayed at the NH Airport for 4 nights while in Brussels for a business meeting. 10 Euro cab ride from airport (they do offer a shuttle, but I did not utilize). Best feature of this hotel is the train station location which is literally across the street. So, if you find yourself in this area for business (it's adjacent to a large office park), you are still only 15 minutes from Central Brussels. Rooms were clean and comfortable. Breakfast was acceptable with a very large selection. The restaurant has a very limited selection however. It was also very quiet since it is so close to both the airport and the train station - from inside the room I heard neither.
