Didn't come here to sleep well, just to be near the mall on July 4th
If sleeping is important to you, bring your own inflatable mattess. Seriously, the beds need upgrading to at least the last decade of the last (20th) century. Bouncy! This is the kind of mattress I would find in a graduating senior's moving back to mom's house sale at the dorms. Furniture is a bit worn probably hasn't been replaced since 1983, like the mattresses. There is a TV, but really, why would I care? I watch TV at home sometimes, never when I travel. Soda from vending machine is $2 for a 16 oz. or 0.5l bottle.There is plenty of ice on each floor's vending machine room. The reason to stay here is location. L'Enfant Plaza Metro station is reachable without leaving the building. Isolation? No way! I wanted to visit Gergetown so I took the train to Foggy Bottom. $1.70 each way on the Orange or Blue line from the Hotel. Want to see the Air and Space Museum? Take a five minute walk. I don't know about room service, but there is a food court in the lower level where you can buy quick food from overpriced Starbuck's coffee to a great Potbelly's sandwich, burgers from Five Guys and few others like that. The local restaurant in the hotel seems adequate though pricey. I have to say that when I travel, I only look for sustenance to survice and not a gastronomical experience. Restaurants never impressed me, since the best food is the one I cook at home. I know what I like, and know how to prepare it. 
I don't think there is a better hotel in Washington DC if your thing is anywhere near the Mall area. Do some touristy things, grab a light lunch and spend an hour or two in the pool on the rooftop. The fitness room is great too. Top-of-the-line machines give you everything you need whatever your workout regimen is. 
If you're there on the forth of July you can see the fireworks and walk to your room instead of fighting traffic to get out of town by car or Metro. If you don't mind missing out on the crowd effect and are lucky to have a room with a view towards the Washington Monument on one of the higher floors, you can watch the fireworks display from your balcony. Then you can watch the stream of stationary brake-lights on the expressways as the rest of the world tries to leave town while you open another cold beer. Even if you live in the DC area, it is a good way to plan for July 4th. Spend the night, and go to work the next day, but don't forget to bring your own air mattress.