Great location, friendly staff
My husband and I drove to DC for an overnight getaway. I was looking for something in close proximity to Warner Theatre that was affordable and reasonably well-reviewed, and the Hyatt filled the bill. I booked via the hotel website for only $99--and that was for a Friday night! I know the prices are more expensive at different times of year--but what a bargain. Bear in mind that valet parking is $45--but most of the places right in the city do charge at least $30 for self parking, and the rooms are more expensive. 
From beginning to end, the staff was courteous, helpful, and very professional--the valets, the clerks, and everyone else we encountered were polite and considerate. We were so impressed with the attention they gave to us. 
This Hyatt is a large (and very busy) business class hotel. The set-up of the hotel lobby is interesting and attractive, if a little dated. The passageways to the rooms are long and can only be described as functional. Our room was on the fourth floor and overlooked the atrium as opposed to the street, just as I'd requested in my reservation. It was clean and cozy, with a King sized bed and a flat screen television. The bathroom was spotless, which is a definite must. 
We didn't have time to dine out before the show at the Warner Theatre, so we took advantage of room service and were very pleased with our meal--the pizza was especially tasty. 
The location can't be beat. Near Chinatown, it's just a short, brisk walk to the White House and other national treasures. There's also some good shopping just around the corner--Macy's and the like. I was impressed with how quickly we were able to access I-395 on our way out of the city to head south, as well. Just took a couple of right-hand turns, if I recall correctly. 
We were so pleased with our stay--we plan to return in the future.