The Bike Rack has been open since 2007, located at 14th and Q Streets. They are the only DC dealer (or East Coast dealer south of New York) that carries Batavus, the Dutch brand that's been making quality bikes since 1904. Pictured are the Old Dutch Classic (foreground, priced at $825) and the Favoriet ($1000), which has a cargo-style front rack.
They also carry the Batavus BuB at $650, and can order other models. For another option with chainguard, fenders etc, there's the Giant Via ranging from $380 to $550.
I took my Electra there for a minor issue and found their service to be very friendly, quick, and knowledgable.