My partner and I visited Mr Falafel on three occasions. Each time we had one of the two main vegetarian dishes consisting of a pita filled with 4 freshly fried delicious falafels, 15 varieties of fillings and 3 varieties of sauces. The owners are very generous allowing one to take as much fillings as one choses. I even saw other people going for a refill. Each falafel was 4.5 euros. From all the restaurants, supermarkets, macrobiotic shops we visited we found this was the most affordable place in the otherwise very expensive Brussels. The owners work hard so Mr Falafel saved us at 9.30pm on a Sunday when there were no supermarkets or other veggie restaurants open. As for cleanliness, it might not have Subway standards (the fast food chain) in terms of food manipulation but I have a very sensitive stomach and I was perfectly fine eating there. In addition, the sitting area and the kitchen and bathroom were very clean.