I agree with @Andy Gross. Even though Baltimore is linked to DC by the Baltimore Washington Parkway, I-95 and the MARC trains, DC is not going to rub off on Baltimore. Baltimore has it's own culture and whatnot and is not really considered part of the DMV (the DC metro area).
My boss at my main job lives in Baltimore City and works in DC. I've known other people who have lived in Baltimore and worked in DC or NoVa. Baltimore is a different city, and some people like that and want to live in an urban environment without paying DMV prices. So I know I'm not going to be able to charge DC rents and I looked in areas where I sighted the kind of people I want to rent to. When the rehab on my place is done, we'll see if they want to rent from me.
Lastly, @Mariama R. a historic district doesn't seem to mean much until the neighborhood is raised up on its own. LeDroit Park in DC is a historic district and I remember a time when it was teaming with drugs and a crazy amount of violent crime. Now, it's a great pricey neighborhood.
I walked through Druid Heights. It has great looking old buildings but I did not see the kind of demographics that would work for me. It is close to the places that would, but I'd have to research it further and ask myself how long I'm willing to sit on a place with stupid high taxes.