On Sept. 5, 2018, during the mid-night, two people suddently opened the door of my unit when my wife and I were sleeping. I called the desk right away and the male staff said it was just a mistake. Next day morning, at the front desk, a female staff said their system had some problems and apologized. But, this kind of mistake can be prevented from by many ways. And, both my wife and I cannot accept this kind of mistake and apology.