I was in Brussels for some business meetings and as I boked very late, the usual choices were sold out to reasonable prices.
Aparthotel Adagio Access is plain and simple but has what you need.
Very friendly and helpful staff, very good location (for meetings in EU Brussels), comfortable, clean and newly renovated room, free Wifi, nice shower. A plus for the little kitchenette with fridge, when you get tired of restaurant-food. Reasonable priced breakfast if you wish, or many choices of cafés in the neighborhood. The hotell has no minibar (who needs it?), but some vending machines in the reception.
Absolutely no view from my window, white wall 2 metres away.
Not suitable for a romantic weekend or for anyone wanting that little extra experience from the hotel as such.