See I held on to my (very nice) apartment also, but it didn't make sense to keep paying rent on a place I rarely visited. I gave notice, paid an early termination fee and dropped it, saving all that money.
If you do that, then you need to use either a friend or family member's address, or something like a UPS store, and also buy a **noterized** "afidavit of residency" from any UPS store or lawyer (very cheep) and bring it with you to your DMV to have the new adress put on your license.
If you use something like a UPS store, take my advice and leave your box # off your drivers licence. The store will still get your mail to you, your address will look more ordinary, and many companies like GEICO cannot accommodate irregular adress formats, resulting in wrong printed adresses and/or lost mail. Just leave the box # off.