A duplex apartment is a type of residential unit that spans two levels within a building. These apartments often feature an internal staircase connecting the two floors, providing a more spacious living environment. Duplexes can be found in various styles and sizes, catering to different preferences and needs. Typically, duplex apartments include separate living areas, bedrooms, and bathrooms on each level, making them suitable for families or roommates. They are popular in urban areas where space is limited, allowing residents to enjoy the benefits of a multi-level home while maximizing available square footage.