Pluses: 1) Great location next to the metro station; 2) friendly and helpful staff; 3) clean rooms.
So-so: Food and prices in the restaurant; the expected over-priced convention type fare.
Minus: Musty room ventilation. I'm more sensitive than average to that so I tend to notice it. I didn't complain about it because I noticed it as soon as I got off the elevator which indicated that it's a problem in all the rooms. Oddly, and typically, the problem is in the rooms and not the lobby and other common areas. My experience is that it's a frequent problem at Marriott hotels, especially those located where the summers are hot and humid. Maybe it has something to do with the HVAC design they use in all their hotels. I've tried the room merry-go-round in the past to no avail so I don't even try anymore. I avoid Marriotts whenever possible but sometimes, like this visit, I don't have a choice.