There's another option for eating and drinking outside in the neighborhood. The Pinch, the laid-back bar and restaurant at 3548 14th Street NW (at Parkwood) has just opened some patio seating, according to their Twitter.
The patio fronts on 14th Street and it looks like about 4 tables with maybe 20 seats at maximum, so it's not large. Still, a nice spot. Their Twitter account says it'll be open for brunch, and as you can see, they have some umbrellas too.
I've always liked the Pinch, it's a fun, laid-back spot with surprisingly fancy and tasty food with a lot of duck: a pulled duck breast sandwich, a burger with duck, bacon and cheddar, and a lot more. My buddy is a big fan of that burger. Brunch has normal brunchy fare plus things like a crabcake omelet, DLT (duck bacon, lettuce and tomato), plus $15 for bottomless mimosas, bloody marys and screwdrivers. Can't beat that.