For anyone working at the IAEA or simply for tourism, the location next to the Alte Donau Ubahn station on the U1 line is perfect. With a Billa supermarket only steps away, buying food to prepare in the apartment was very convenient. We were three adults but did not find the apartment small for three. However, it would be even better for two people. The apartment is well laid out and very suitable for a comfortable week's stay in Vienna.