This old brownstone on the outside was totally new and modern on the inside. We used the very well-appointed kitchen on several occasions and we had most everything we needed except for some paper towels, which we found at the Capitol Hill Market two blocks away.
This was in a fantastic location - 10 minute walk to the Capitol in one direction, 10 minutes to Eastern Market and the Metro in another, and less than 10 minutes to Union Station in yet another direction. We didn't use the rental car at all so we turned it in early - can get everywhere by Metro or walking.
There are quite a few steps to get to the apartment inside so a big suitcase will give you a workout. If you are used to using a washcloth and bar soap, bring some with you but otherwise we had everything we needed.
The inside space is very light and white and the bed was very comfortable. There was plenty of space even though this was a studio with a separate bedroom and the air conditioner worked well.
I would definitely stay here again and not rent a car.