Rode Kruislaan accommodation are 5 different colored buildings/towers in Diemen.
See below which building your room is in. Keys can be collected at the caretakers office in the purple building, ground floor.
Yellow: Rode Kruislaan 1101 - 1134
Pink: Rode Kruislaan 1201 - 1234
Purple: Rode Kruislaan 1301 - 1334
Blue: Rode Kruislaan 1401 - 1434
Green: Rode Kruislaan 1501-1534