I can really recommend Alex's place. I traveled to Brussels for work and stayed at his place for four nights. The location is great ! There are several restaurants in the area, downtown (and/or main touristic attractions) are around a 25 min walk but if you are not up for it, you will find several tram and metro connections within a 5 min walk ;)
Check-in and check-out was really really easy and Alex replies to messages quite fast! Plus he also let me leave my suitcase there for a few hours on my check out day.