Great hotel close to everything
Really enjoyed our latest stay at the Grand Hyatt in Washington DC over Spring Break. The hotel is very nice, clean, service was also very welcoming. I loved the location the most. We parked our car in the Self Parking lot and never used it for 4 days. You can walk to most sites downtown including White House, Capital etc. The metro station is attached to the hotel so whenever you need you can take the Metro. We used it for many trips. 
We did not eat in the hotel so can't offer any information as to the Cafe. We did however use the Starbucks in the hotel for coffee and the deli for breakfast once. In my opinion it's all overpriced so if you just walk a few blocks to your destination we always found an au bon pain or a deli or something where we can grab breakfast or lunch. It's also a few blocks from Chinatown so we enjoyed eating there as well.