All in all it was okay but nothing extraordinary. Large and bright rooms, walking distance to the EU-Institutions, public transport, restaurants and stores nearby. The place is cleaned once a week (not the bedrooms) and besides that, nobody really cares about the house so the quality of your stay dependas mostly on your roommates. Almost every piece of furniture is somehow broken and many things in the house need to be fixed. The Bed was really a shame. The sheets had holes and black spots on it and the blanket didn't have feathers in it anymore. Would have been really cold in the Winter.
Still seems to be one of the better options for interns in Brussels from what I herd from my colleagues. Too expensive in my opinion.