A bunk arrangement including a partition device is providing which is especially suitable for use as a sleeping or storing compartment in a vehicle, especially a truck or a bus. In one alternative, the bunk arrangement includes a partition device with a partition wall with a plurality of wall elements, which are provided for folding together and defolding the wall, for retracting and extending it, respectively, and holding and guiding means for holding the partition wall and for guiding the same between a retracted and an extended state.