As previously noted, there's a central address, but I'd like to note that you receive your mail in a small Po-box-style, mail box. Each apartment will have key.
If you have any packages, or items that won't fit into the box, then they'll be sent to the main office for you to pick-up during office hours. If you don't pick it up after a day or two, they send it back.
The office won't sign for packages, so if it isn't USPS, they'll try your door, if nobody signs for it, it might go to the warehouse for pick-up.