Compared to the rest of the Washington D.C. market, the Mantua region has smaller rates, so you should have no trouble finding a great deal in this undervalued submarket.
In the last 90 days, 0 listings have been made available, which means spaces are probably going fast. You'll want to be prepared to tour spaces as quick as possible. About Inf% of the available space in the Mantua are subleases, so you might be able to find a shorter term or below market rent. There aren't many listings below 2,000 square feet available, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 1,130 sqft.