On the plus side: The space is really big and the style is quircky. Plenty of room to tide your things up and for our 2 year old to spread toys around. Great location, plenty of transports nearby, different neighbourhoods at walking distance, super super nice host (thank you Corinne!), little outside space our little one loved (and my smoking partner). Quiet at night, good bed and good water pressure in the shower (the 3 pillars, right?). And very clean.
Two minor flaws, the bathroom was very damp and the daylight doesn't really get inside.
All in all, a good place to stay at when you're in Brussels.