Not close to the Main Tourist Attractions...
While we were in the shuttle from the airport to this hotel, we realized that we were nowhere near any of the tourist attractions of DC. This hotel is located about 3-4 miles north of the National Mall in the Woodley Park/Adams Morgan section of town. That being said, unless you are attending a convention, have a reason to stay so far north, or get a very good rate to offset your location, stay elsewhere.
On check-in, as Gold Elite members, we were offered a room in the Wardman Tower. This is the oldest section of the hotel, and we were told that at one time they were apartments. This room was good sized with three different rooms; but there was an musty feel about the room. In addition, while the living area was nice and cool, the bedroom was very warm despite the thermostat being at full blast cold. Temperature issues are not acceptable to me, so we went back to the front desk to ask for a different room. The front desk personnel were very friendly and helpful. They fave us a room in the newer central tower. The room was typical for a 1970-ish property. The area of the bed was quite large, but the bathroom was the size of a cruise ship's bathroom with the addition of a bathtub. The bed and lighting were OK, but the TV is located across the room, quite far from the bed. 
The Elite lounge on the tenth floor provide a nice breakfast and it was well stocked. We did not eat at the hotel, but had a drink a Harry's Pub. Sevice was only average. The concierge was helpful. In closing, this hotel is just an average property when you consider location, service, and room appointments. It's a busy hotel with many conventions and conferences...but if you want to take in any tourist attractions, you are too far away.
Overall helpful hints: If you want to take public transportation to the attractions, you can take the Metro. Or if you are like me and do not want to take subways, you can take the Circulator bus that stops in front of the McDonalds. Get their map at the concerige desk. Fare is $1.00. They have an extensive route system around town.
You may want to visit the National Cathedral, which you can see from north facing rooms. It looks so close, but don't be fooled. It's 1-1/2 miles away and all uphill. If you do walk and want to continue sightseeing in the National Mall, you can walk down Wisconsin about a mile to the Circulator bus that will take you to Union Station, which is close to the Capitol. 
We had dinner at 9pm in the Adams Morgan area on a Sunday night. We did not feel safe in the area.