Perfect Location - Nice but not your average JW
My family stayed for a weekend to tour the city. The location is ideal. You can walk just about anywhere. We walked all the way to Arlington the first day. If you don't want to walk, you can grab a cab. Cabs are always sitting right outside the hotel. The cost from the hotel to the Smithsonian was $12 for the 4 of us (including tip). We had a good view from our room on the 12th floor of the Washington monument. The "occupy" tents were directly below our room so that took away from the view. What a joke! 
The hotel lobby is very nice. You can tell they did significant remodeling over the years of this older hotel. The lobby looks like a JW lobby. Our room was clean however it was not updated like I would expect. It reminded me of an older Marriott hotel room. The room is also quite small. They have the snacks sitting on one of those sensor boards, so if you pick something up...you just bought it. My kids did this immediately upon entering the room. You would too if you were 7 years old and you saw M&M's sitting on the table. The hotel staff was very nice about removing these charges. The fridge in the room is set up the same way...you touch, you buy. There's also very little room in the fridge for you to put any of your own stuff.
The hotel restaruant was excellent. The portions were huge and the food was great. I read reviews about the restaurant that said it was expensive, which I would agree with, but the portions were so big that we ordered one kid's meal for both of my kids and this was plenty. We skipped the breakfast buffet and ordered off the menu. I highly recommend the restaurant. We ate there for breakfast each day and had dinner once.
Overall, I would recommend this hotel. It was convenient and the hotel staff was very friendly and helpful. I didn't rate it a 5 because I've stayed in several JW's in the past and this one is more like a traditional Marriott with a higer end lobby.