Duchnicka 3, building 5 | After entering the main gait, go left. Turn first alley right (there is guard station on the right, and sign do entrance for car what might be confusing). Go down the alley, and our place is in the grey building at 1 o'clock. 1st floor, dorbell no. 18., วอร์ซอ 01-796, โปแลนด์