House for me and for my grandma

My design contains two housing units. The smaller apartment on the ground floor is for my grandparents and the second larger apartment is for me. Although it is shared housing, households are completely separate. Each unit has its own entrance, but the entrances to the apartment are connected by an outdoor staircase, so both families can easily visit. I used the principle of taking material and thanks to that space was created the terrace. I tried to support this concept with a glass railing. The building itself is made of concrete.