The China Room is one of the rooms on the Ground Floor of a house located on what street?
China Room: The China Room is one of the rooms on the Ground Floor of the White House, the home of the President of the United States. White House: The White House is the official residence and workplace of the President of the United States. White House:  It is located at 1600 Pennsylvania Avenue NW in Washington, D.C., and has been the residence of every U.S. president since John Adams in 1800.
Pennsylvania Avenue NW