Shani - It's been a while since I was at Howard (12 years) but are The Towers full? I also lived in the Mondrian for a minute. Check with property managers. They often can hook you up with other students looking for roomates. If you have a car, I'd suggest checking out Silver Spring.
Another option...contact the off-campus housing offices at Georgetown, American & GWU. Often, they can offer some leads and you may also hook up with other area students looking for apartments.
Since it's near summertime, The Towers should be clearing out and there should be some open spots in there. If you're bored...feel free to stop by 816W - and let me know who's living up in there nowadays. LMAO at some of the stuff that went on up in that joint!