I stayed for 1 night weekend before Christmas using my free night award. Website showed Fantastic and Marvelous suites available for sale afternoon before I checked in.

Front desk agent told me the hotel did not have Fanastic suite available for upgrade when I checked in at 9 PM, so I was assigned a standard room one cat up from the basic room. Apparently Marvelous suites are not considered standard suites for Plat upgrade, according to the hotel. Room was very small.

SPG mobile website showed Fantastic suite available for sale so I called Plat concierge who also confirmed that Fantastic suite was available for sale. My wife was getting settled in and did not want to change rooms, so I didn't ask Plat concierge to check with the hotel for me for available upgrade.

Overall, I was not impressed with the hotel. Yes, the location is great for the White House and the mall. But if you're not going there, then that location is of limited value. If you do not get an upgrade, the standard rooms are among the smallest of any Starwood hotel in DC. The rates for the W was actually similar to St. Regis for that weekend. I would stay somewhere else if I were paying for the room.