See the Urban Turf post on Wardmans.
A Short Overview of DC`s Most Prevalent Architecural Style
April 17, 2012 by Shilpi Paul
Bloomingdale row houses are mentioned:
Row house flats
Wardman also tested out a few ``row house flats`` around Bloomingdale — two-storybuildings with two identical units in them, one on top of the other. The idea apparently didn`t catch on (but this writer now lives in one).
[Note that the pic supplied here is from the Urban Turf post.]