Perfect stay, amazing location - fantastic holiday spot!!!
So my wife and I decided to book a 6 day vacation to Washington, D.C. - she'd never been before and I hadn't been to D.C. in probably 12+ years. Needless to stay the Fairmont Washington D.C. made our experience one of the best vacations we've had to date. 
1. Location = amazing. You're a 5-7 minute walk to Foggy Bottom Metro Station. *TIP: day one buy a 7 day rail pass and ride the metro everywhere. We took the Metro from Reagan National to Fairmont and were in the room in 30 minutes or less including all the stops, walks, check-in, etc. You're a 10 minute walk from downtown Georgetown (M Street). M Street is a must. You're also walking distance to Whole Foods and so many restaurants and bars/lounges it's amazing. And by bars I don't mean "bro" bars or lame bars with drunk chicks everywhere - these are nice, relaxing, local establishments. JFK even proposed to Jackie Kennedy in (Martin's Tavern). 
2. Rooms = beautiful and from the research we did, some of the largest and most luxurious in D.C. 
3. The little touches = The doormen change the doormats outside the hotel to "Good Morning" "Good Afternoon" "Good Evening" etc. throughout the day - that's so awesome and such a nice touch. The flowers in the lobby - gorgeous. The decor in the lobby - amazing again! There is even a bee colony that the Fairmont harvests their honey from on the roof and they breed them onsite to make their own honey! Are you kidding? That's so cool - and don't worry they don't sting! Cherry blossoms in the garden - lit up @ night - priceless and most have photos to remember the stay. 
4. Courtesy and professionalism of staff. Great staff, great concierge, great check-in. We got to the hotel around 11:00am for check-in. Yes, 11:00am - totally not expected but again, we got from the airport to the hotel faster than imagined - but the front desk didn't give us any trouble and checked us right in - way early - and with a smile and no hassles. Thanks again!
5. Couldn't have been any easier to get a cab - doormen are great again. 
6. Amenities: Robes, free wifi (with President's Club membership - you can register online for free), onsite gym, large pool, jacuzzi, steam room, sauna, designed body washes and soaps in room, etc. 
In all - nothing bad to say at all. I'm pretty sure this is my first 5 star ("excellent") review ever on Trip Advisor. Well done Fairmont - we hope you'll have my wife and I back!