Had a great stay at Filippo and Tommaso's place which had an excellent location in the heart of Brussels. We arrived a little early but they met us for a beer down the street just after we got there and showed us around.
The apartment is located on a lively street but in the back of the building so it does stay quiet. Just a 5 minute walk to Grand Place, and 10 minute walk to the Central train station where we took a day trip out to Ghent (highly recommended). There was just two of us so we had plenty of room, but it can definitely accommodate more people. Everything you need is here, and feels much more homey than a little hotel room which is probably about the same price. 5 stars across the board!