Sotheby's Presents: The Harnett Office Condominium Suite 7. The suite has been virtually staged to give it a modern look. The entrance for Suite 7 is at 1420 or 1426 21st St NW. All suites are accessible via an internal common area hallway. The Hartnett is conveniently located in Dupont Circle, near Red Line Metro with shopping, dining, nightlife just outside the door. Close to Georgetown, Downtown and the K Street Corridor-Suite Square Footage is Approximate and based upon the public record and Condominium Docs. All measurements on the floor plan are internal usable and approximate square footage. The square footage listed is based upon the public record. Unit 7 $ is 507 Sq Ft condo fee is $525.70 Square Footage is Approximate and based upon public record and Condominium Docs