A definite recommendation in DC!
We stayed for a week in January, through the American government shutdown and very cold weather and couldn't be happier to have chosen David and Carrie's place. It's very clean and comfortable, has all you could need for a stay away from home and is close to two subway stations (2 blocks away). You can also walk to the capitol along Pennsylvania Avenue and within walking distance you can find grocery stores, a CVS pharmacy, a Trader Joe's market, the Eastern Market, an Amazon Locker at 7 Eleven, many local restaurants (do check Sanphan Thai cuisine at lunch!) The shower and the bathroom are small, but that was not a problem for us, we loved the abundant water flow, especially when we would come back form the cold outside and could take a hot shower! Heating in the apartment is very good (so would be cooling, I imagine, since there are 2 AC units, enough for the whole space). The washer and the dryer were life savers too! We met Carrie (and Leopold, their cat!), she was very kind. Checking in and out is easy, you can follow the instructions and it's plain and simple. Communication with the hosts was very easy and quick. I strongly recommend staying there.