Mezzanine beds will always be a favorite for small beds. What makes the mezzanine beds so effective is the amount of storage you can put there. The space above shows the full range of storage options: from a multitude of drawers to cabinets. There is even room for a small office area.
A traditional bed in the area would mean losing all those storage options. A mezzanine bed is therefore a wise choice for small spaces. And if the bedroom is small enough, the use of a mezzanine bed could be the only way to create a usable workspace in this space.