We have spent one week in Four Seasons, and i have to say that this is absolutely amazing hotel in terms of service! Just couldn't be better! The hotel can boast excellent location -just next to Georgetown with fantastic restaurants, shops and cinema and 5 min away from Foggy Bottom area.
It has also very well equipped gym and decent-sized pool.
The only drawback was the noise from construction works in the hotel, hope it will be finished soon.