I bought this last year. And it is deteriorating rapidly. It goes through periods where it will not cool, according to LG support the only remedy is to unplug the unit (sometimes for hours) and then run it (again sometimes for hours) at max cool and max fan to get it working again. When it doesn't work, it will emit a loud distressing buzzing noise. Since last year it has gotten noticeably worse, requiring this hard restart at least once a day. I cannot use the cooling during the night, as it will inevitably fail and wake me up with the buzzing sound.
 
If you like the idea of constantly fiddling with your AC unit, of never knowing how long your rooms will be cool, or what horrible noises you will endure, This is the unit for you. 

For all others, I would avoid.