These kinds of apartments typically consist of one large room which serves as the living, dining, and bedroom. Kitchen facilities may either be located in the central room, or in a small separate room, and the bathroom is usually in its own smaller room. The studio apartment is an apartment with a single room. They are also known as single-room dwelling places or studio flats. There are several types available; the straight studio is very basic, while the alcove studio has a wing. The wing or nook is off the main area, which can be utilized for dining or sleeping. A studio apartment differs from a single room occupancy (SRO) unit in that an SRO does not usually contain a kitchen or bathroom.