If you want to stay in an apartment walking distance from the city center and the Grand Palace, John and Ceca's place is convenient and perfectly located just south of the city center. During my stay it make it super simple and easy for me to get around Brussels. John and Ceca were very quick with responds especially if I needed anything and they went above and beyond and always checked up on me during my stay to ask if there is anything they can do to make it better or if I needed anything. If you are going to Brussels and don't want to stay far from the city center just stay at John and Ceca's place it makes life a lot easier.