If you are a tourist & looking to explore the old town by foot, look nowhere else than Evan's apartment. The location checks all the boxes, 3 mins from grand place & all other main tourist spots, 3 mins from Brussels central station which is a big plus, you literally wont spend a penny on public transport inside the city as you wont need any. It worked perfectly for us as most Christmas markets were in close vicinity. The apartment is quite spacious too which makes for a comfortable stay and even the kitchen is stocked with basic supplies. Two bathrooms is a plus always. Its situated in quite peaceful & beautiful courtyard and feels quite safe. Not that it bothered us, but the bed does creak on slightest movement, which is fixable.
Overall totally worth it & definitely coming back here whenever in Brussels.