Inside the house is the Luck bobblehead, located on the bookshelves on the west wall of the basement. The house is good for player housing because there are beds you can rest in, a workbench and lockers to hide your loot in. In the basement there is a shrine to Abraham Lincoln, (ironic as the original owner, Robert E. Lee, General of the Confederate Army, fought against the Union) complete with flowers and wine.
This house makes for good player housing, due to its size and the fact that its containers do not reset. However, if the Lawbringer perk is added after the initial visit to the house, the first aid box near the bed in the basement will respawn, erasing previously stored items.
The photo of President Lincoln in the shrine is actually an enlarged version of the exhibit info plates at the Lincoln Memorial. The writing can be seen by standing on the far left side of the shrine and looking between the picture and the wood frame.
The offerings of flowers and liquor would indicate that Lincoln's reputation has been canonized by the wastelanders to the level of a deity.
The radio in the basement will only appear if you have the Lawbringer perk and Junders Plunkett is in the house.
Junders Plunkett will only appear if you have the Lawbringer perk.
Arlington House is actually the former home of Confederate General Robert E. Lee. The in-game version bears no resemblance to the actual building and retains a look more similar to the traditional suburban houses of the Capital Wasteland.