Nice location and atmosphere - but too disorganized for large groups
This hotel is in a good neighborhood, in a rather nice, old and quirky style with dark furniture, dark rooms and with a nice overall atmosphere, a good patio (sometimes it is open - sometimes it is not - but when it is it is nice) and an ok restaurant. 
Some rooms are quite spacious and equipped with really comfortable, hard beds. The aircondition in my room was terrible noisy and old - but since the weather was not to warm I didn't really mind. There is no tv in the rooms and in my room the bathroom was old (water didn't leave the bath easily) and needed an update.
The hotel is 3 - 4 stories high and with no elevators - and when we arrived no one offered any kind of service carrying suitcases to the higher floors. When I left I asked for help and got it instantly - so just ask for it.
I was in Washington with a larger group and for that purpose this hotel was not a good choice since they seem too disorganized to handle more than 2-4 people at a time. Having breakfast became a nightmare. The complementary breakfast doesn't offer much choice - but even then they just couldn't handle 4-5-6 people having their breakfast together - and my impression was actually not that they were understaffed but rather that they were working completely without a system, which made any bit of complexity (asking for milk or tea) too hard for them to handle.
In the afternoon we had drinks on the patio a couple of times and again they just couldn't handle individual tabs or placing our orders on room bills. The waiters were nice enough but had no clue how to handle a group.
I got the feeling they really didn't like our group and had no idea how they wanted us to go about their "system". They even send an e-mail and complained (to the women who were helping us organize the trip) that we didn't tip well enough - which was because 1) the service was so horrible 2) when ordering the complimentary breakfast we simply had no idea we were supposed to tip, which was mistake, but writing an e-mail to our organizer instead of just talking to us seamed a bit dramatic to us.
When we checked out some of us had items on our bills that we didn't understand and when one of the women in my group asked for documentation she was given 60 dollars and was told by the receptionist that her life "was not big enough if she cared about 60 dollars" - that was a first for me in an american hotel.
My advice would be to only choose this hotel if you are a couple or a single traveller. Or if you have a really big life :-)