Scheduled Maintenance

OSA will be performing scheduled maintenance on Monday (21 October) from 17:00 to 19:00 US EDT. We apologize for any inconvenience this may cause. Thank you for your patience as we improve our services.

If you need assistance, OSA's Customer Service can be reached at +1 202.416.1907 (Worldwide) +1 800.766.4672 (US/Canada) or by emailing us.

Customer Service is available from 08:30 to 18:00 US EDT, Monday through Friday.

Hotel Reservations

The Fairfax hotel in Washington, DC front entrance


Average Temperature: 32°C | 89°F

Time Zone: Eastern Daylight Time (EDT) | UTC / GMT -04:00

Currency: USD

Electricity: 120V

Attendees choosing to pay the registration rate that includes housing, will stay at the Fairfax Hotel in Washington, D.C.  The OSA Foundation will make your hotel reservation for you and send you a confirmation number. You will only be required to cover your incidentals with a personal credit card at check in.  Please do not make your own reservations. 

Those choosing to register without housing must make their own housing arrangements at the Fairfax Hotel or other accomdations of their choice.  OSA Foundation staff will not be able to secure housing for this registration type.

This Fairfax Hotel embraces the style and grace of a bygone era. Nestled among world-class boutiques, unrivaled dining and iconic monuments, The Fairfax at Embassy Row, Washington, D.C. is perfectly situated in Dupont Circle, one of Washington’s most vibrant neighborhoods. With the Dupont Circle Metro less than two blocks away from our hotel, famed Washington, D.C. attractions such as The White House, National Mall, and the Lincoln Memorial are at your fingertips.

2100 Massachusetts Ave NW,
Washington, DC 20008
Phone: (202) 293-2100


The Fairfax at Embassy Row hotel provides valet parking only. Overnight valet parking is $45 (plus 18% tax), while daily valet parking is available at $26 (plus 18% tax). Guests do have in and out privileges. We regret to inform you that the parking garage cannot accommodate oversized vans, mini buses or trailers. Please note that self-parking is not available and street parking is limited and metered.