Albert was a good host, very fast responses and always available. The Studio is located very close (3 min. Walking) to Bruxelles-Midi (Gare du Midi). Therefore you could get to the City-Center in about 10 min. including walking. As described you have to take a lot of stairs to get to the Studio. Check-in and Check-out were easy and very well documented. The Studio looks just like the pictures, although the ceiling in the bathroom has some mold. This is understandable because the bathroom only has a tiny window, but still needs to be mentioned. The house has very thin walls so you can hear absolutely everything the other guests on the floor are doing.
Overall I'd recommend this apartment for short (>= 1 week) trips to explore Brussels.