Almost very good...
It is not often that I get to stay at hotels a few miles from my house -- but my wife and 2 1/2 year old got to do just that for a few nights as we escaped to the hotel with power and AC. 
The Renaissance looks nothing like the old Wyndham hotel that is used to be... modern lobby, upgraded rooms, and mostly upgraded service. This hotel would rate very-good if the rooms were just a tad bigger (we were on the club level) and if the Valet service was improved. 
TIP* If you plan to Valet park and REALLY need to leave the hotel at a certain time -- give the bell-desk at least 30 - 45 minutes notice -- the hotel entrance is constrained by a poor location, one-way traffic, a taxi stand, and buses. If more than a few guests request their cars -- chaos ensues. My wife and son called 30 minutes before needing our car on our 2nd day and STILL waited almost 30 minutes longer for them to bring the car up.
Rooms are smaller, but not unbearable. The club lounged offered a slightly nicer than normal array of cold and hot breakfast goodies, afternoon snacks, and evening dessert. 
A good choice for the DC area and walking distance to a lot of good restaurants and activities in DC.