I really like this Hilton brand
My brother spent a couple of days at this hotel six months ago and told me it was really nice. So among the many hotels available for the conference I was attending, I decided to chose the Hilton Garden Inn.
I spent some time at another Garden Inn property and was really pleased with the result, and this stay confirms that I do like this Hilton brand.
The hotel is perfectly located. Just a couple of blocks from the White House and many other attractions, and with a subway station across the street.
The room was big and the bed was comfortable. Although I didn't use it this time, they have a small fridge and microwave oven in the room, and there was a self-service washing machine in my floor. Another great thing is free wi-fi in the hotel.
The hotel had a small lobby but a spacious breakfast room, as well as tables and sofas. There is a coffee machine in the room and also free coffee at the lobby, so you can grab one cup if you don't have breakfast at the hotel. 
The breakfast buffet was complete and with lots of options, though the eggs were not that good. Maybe a cooked-to-order omelette is a better option.
A couple of things I didn't like about my stay:
- I got a room on the second floor facing the street. It wasn't that bad considering that those rooms are far better than the internal rooms (I checked my colleague's room and the layout was odd and significantly smaller than mine), but I would prefer a higher floor.
- The room wasn't ready when I arrived and had to wait. Actually, I left my luggage and went out, but it's so good when the room is ready, specially after a 12-hour flight on couch.
- A 10-dollar deposit for an umbrella... really?
Anyway, besides the above, I enjoyed my stay. The hotel is simple, functional and unpretentious. Would definitely return and choose a Hilton Garden Inn again.