Manu is really helpful, with lots of maps and stuff to help visitors figure out the sights. The room is bright and airy.
If there's two of you, I'd advise that you ask for a second duvet / blanket.
I found it helpful that the bathroom and toilet were separate.
It was pretty easy to travel between his house and the sights - both Atomium and central Brussels. Very good stay overall!
(He teaches Tango... If you're interested, do ask him about how you can experience that while you're in Brussels!)