There are two ways the bed can be lifted up, from the side and from the foot. The first opens left to right, the second opens bottom to top.
Generally speaking, the layout of the space the bed is in determines which direction it opens up. If the bed is surrounded by walls on three sides, then the only option is to open from the unblocked side. If the space is relatively open, then it will be determined by ease of access and how much space there is for movement. If the space is quite large, then we suggest opening it from the foot. This way, pillows and blankets will be less likely to fall off.