Mixed Review
The bad news: The maid removed hand towels from our room one day and did not replace them. I had to call twice and stay up later than I wanted to until they were replaced around 10 pm. More bad news: The bill under my door at checkout said a final bill would be emailed to me, but all that was automatically emailed was a survey. I had to argue with the hotel to get it to fulfill the promise it had voluntarily made.
Perhaps it's typical of the area, but a room in this hotel is very pricey, and it is somewhat insulting to add $34/day to park and $13/day for in-room internet (which I did not buy but understand from others was not very good). Our room was pleasant enough.
Good news: Unlike some convention hotels, there are a number of reasonably priced restaurants within a block or two of this hotel. The metro station is also quite convenient. 
The reservation clerk was very helpful, especially when I originally reserved by accident for the wrong dates and had to make a change.
This was one of the better convention hotels I've seen in terms of finding my way around without having to walk exorbitant distances or get lost in a maze.
I think this was a Sheraton the last time I stayed there, and the signage then was so miniscule that it took me quite a while to even find the hotel. The signage now is much better.