Having Stayed here three times, I love here so much and I'll stay here every time I visit Brussels. It's not gorgeous, but quite comfortable and functionally satisfying. Its great location and access have been mentioned enough, so no need to be explained more. Each of the 3 supermarkets in 3 minutes' walk offers you variety of foods, beverages as well as grab-and-gos. Not to forget, all staffs I met were very kind and friendly. They would deserve extra tips if in North America.
Now please let me share some tips for new guests. (1) Room cleaning is provided on request for free for a stay longer than 8 nights, either on Monday or Friday. If you want it for a shorter stay, it's charged. (2) Towel change are not free here since it's an aparthotel. You can pay for it, but I recommend you to wash them by yourselves at a laundry on 2nd floor where you can buy a dose of detergent also. If you have more laundry, there's a sophisticated laundromat with a vending machine of various detergent, softer and bleach in 5 minutes' walk. (3) There is not a kind of Business Center here. If you want to have your document printed during your stay, you can attach it to an email of request and send it to the reception. Then just go down and pick it up.
Enjoy your stay!