GREAT location- Lovely reception staff- Big rooms.
Location. Location. Location. The Washington Hilton is the perfect location for sight-seeing in DC. We arrived at Reagan National and took the metro to the hotel. The metro station is just down the hill, a very short and enjoyable walk. You'll pass by good coffee shops, restaurants and boutique shops to get there. We loved having dinner and drinks just outside the metro stop after each long day of visiting the sights and museums. 
Evening people watching in the park just down the street was very fun, too. One very hot afternoon after a long day of walking we were tired, so we took advantage of the local bus goes back and forth from the metro station. The bus took us up the hill and dropped us off right at the Hilton for about $1 each- a quick trip but a real bargain to us that day. 
We didn't eat at the hotel because there were so many great restaurants in DC- several within a very short walk of the hotel. A block from the hotel is a CVS-type pharmacy- water, beer, wine, other beverages, snacks, etc. A few steps from CVS is an Italian Chain restaurant- Bucca De Beppo- delicious food, great service, and a fun place for groups of 4 or more. The Pope room was excellent- all the food was good and portions were huge.
I would stay here again- the location was perfect.