The apartment is located only a short walk away from the European parliament. Also, only a short walk away are multiple supermarkets (Aldi, LIDL, Carrefour Express) for all your grocery needs.
The apartment is spotless, cosy and has everything that you will need for your stay in Brussels with 4-6 people. Communication with Maria was excellent; she was accommodating and quick to respond.
I highly recommend this apartment as a base for your exploration of Brussels! :-)