Ask for a room with a view of Washington monument.
Excellent!!! I am writing this from my room (701) and I have to say, my stay has been wonderful. The room is a suite (thank you W hotels for the upgrade!) and it is fantastic. I am not sure if the hotel has recently been renovated, but it certainly seems like it. There is a nice marriage of an older building (high ceilings and molding) and a modern aesthetic - and the result is warm and comfortable. I love the bathroom and the shower and the entire experience is a welcome relief as I am visiting from an area that was impacted by a hurricane and I had been out of power and hot water for a week. With that in mind - the universe must have been looking out for me (or maybe W hotels was) because the upgrade was such a gift. I am traveling with a work companion and she is in room 601 - which is a similar suite with the same view.
The location can absolutely not be beat. The view from this room is amazing, I woke up and went to sleep with a full view of the washington monument (picture attached). The treasury building is directly across the street and just on the other side of that - the White house. I have walked down there several times, because it is just so darn close!
We held a meeting in a meeting room (Suite 1) and it was great. The room is a little small, but it does not feel like it, because the ceilings are so high and there are windows, so it worked out very well. The team that supported us during the meeting (AV, catering) were all very solicitous and always there when we needed them. The catered lunch and break were fine, not fantastic, but not bad. Nicole Charles, the sales manager, stopped by and was very welcoming and her personal touch was very appreciated. 
In fact, I have to say, the staff in general has been great. Even when I am just walking by the front deck the team will say "Hi" or "Welcome back" - it is just a nice touch and I love feeling so welcomed.
Did not try the Bliss spa (all booked) nor the rooftop bar - which I believe is one of the badges of honor of the hotel, must have a great view. 
Thank you again team W! Now wish me luck - fingers crossed my power has been restored when I get home...