Just two weeks ago I stayed at the Hilton Brussels City, which is next door to the Crowne Plaza. The CP entrance towards Rogier (where Hilton and Sheraton has their main entrances) was still closed (due to refurbishments according to a sign on that door). And the facade was definitely not completed since construction workers were all over the Crowne Plaza.
I had my last night at the CP airport. This was a great hotel, can’t be older than 2 years or so. Very modern and well equipped (WLAN internet in the public areas and LAN in the rooms). Executive Club lounge with open bar up on the top floor.
They offer a free shuttle bus to and from the airport and the trip takes less than 4 minutes. Internet rates from 82 euro.