Great place, location and value - very comfy bed and clean flat! Alexandra was super attentive and responsive. Only 2 things I would point out for future guests is that:
#1 - the apartment is on the 1st floor (2nd floor to US folks) with no lift in the building. Hauling my very heavy luggage up and down the stairs was just a little unexpected.
#2 - the towels were neatly folded on the bed, but were still damp from laundering. Not a big deal because it was clear they were very fresh, so I just hung them to dry overnight for my shower in the morning.
I would indeed come back to stay at Alexandra/Roberto's on my next visit to Brussels!