The location of the hotel is smack in the middle of downtown. There are plenty of pay garages and there is some street parking. It is a weekend and the location is far away enough from the mall that one won't be competing with tourists for parking, but you will be feeding a meter. If there is a Caps game on Saturday, all bets are off. Gallery Place will be mobbed.
One could also park at an outlying metro stop and metro to downtown.