Thanks a lot for the replies.

I think I'll take your suggestion and ask at check-in.

I was also thinking about waiting until I see the suite. If it's a great room on a high floor with a good view, then I could call down and tell them I love the room and ask if I could stay there all 3 nights. If the only suite available is undesirable, I might as well move to the den, although it's a brand new property outside of downtown Atl and a lot of people are still not traveling so they may be at lower occupancy.