Positive experience but with a few (huge) weak spots
This hotel is in an ideal location between Georgetown and the Foggy Bottom Metro Station (the National Mall is just a 10-minute walk) . We had pre-paid the room with our travel agency and obtained a standard room with two queen beds at 200 dollars/night without breakfast as a super-offer. The hotel has valet parking (40 dollars/day).
Overall the staff has been very kind. 
Our room was large enough (we have been given a Starwood preferred guest) and a very comfortable bathroom with shower and bathtub. One of the leather seats in the room had a clear mark from an iron – I thought that this level of hotel should take care of details like these. Room and bathroom were clean, however we had the unpleasant presence of small ants near the coffee pot (which we did not use) for two days in a row. Nothing changed although we have informed the reception. We visited both the gym and the pool and thought they looked really good, but did not use them.
A last remark is the unpleasant habit of hotels to withdraw a certain amount from your credit card at check-in even though the room has been already paid for; to the detriment of the monthly availability of one’s card. Even worse, this hotel has withdrawn three different amounts for three days in a row and was not able to give a clear explanation for it. We finally reached a settlement, but until we see our statement, we will not be able to verify exactly how much has been withdrawn. 
All in all the hotel is not bad, but there are several negative aspects for a hotel of this level located in a capital city.