"A large cooling number on paper, significantly undermined by the physics of its inefficient design."
The '16000 BTU' specification is a lab-condition number. In your home, this single-hose unit will create negative pressure, sucking in warm air and effectively reducing its cooling power to what you'd expect from a ~10,000 BTU unit, making the 750 sq. ft. claim highly optimistic.
This is for a renter who needs to cool a single, medium-to-large room (400-500 sq. ft.) and cannot install a window unit. Its value is in its portability and smart features for the price, not its peak performance or efficiency.
Anyone seeking maximum energy efficiency or needing to cool a space genuinely approaching 750 sq. ft. should pass. A dual-hose portable AC or a standard window unit will deliver more cooling power for fewer watts.