We recently spent a week in a one bedroom deluxe condo at Wyndham Old Town Alexandria.
The location is great, right across the street from the King Street Metro, which makes going into DC a breeze. It's also walking distance to too many great restaurants to count ! There are many nice boutique shops up and down King Street. Our unit was extremely attractive and comfortable with a living room/ full kitchen and separate bedroom with king bed, bath and jacuzzi tub. The resort offers free parking and free wifi which works very well. Free coffee and tea are offered in the lobby area, as well as free newspapers in the morning.
Since we had a kitchen, we also stocked up on snacks/drinks at nearby Whole Foods (easy walking distance). This is our favorite place to stay in the DC area; we will be back!