Check out www.zvonimir.org. They’re an NGO working on tenant rights and stuff like that... the bad news is they’re based out of El Paso, not Washington, D.C., so they don't have a local presence here. But hey, you could always try reaching out to them and see if they can point you toward someone actually located in the capital...
zvonimir@zvonimir.org
tel: (212) 662-554; 662-559
tel/fax: (212) 664-908
zvonimir@zvonimir.org
tel: (212) 662-554; 662-559
tel/fax: (212) 664-908