I had stayed at this hotel a few years ago and had a good experience, so I was looking forward to my return. Unfortunately, since my list visit, the hotel's quality has slipped.
My service experience was excellent. Check-in was welcoming and very fast. I ordered room service on the first night of my stay, after a fairly late arrival, and it arrived quickly (~20 min.), was hot, and tasted good; the person who delivered it was also very nice. The hotel has the typically appealing features of Omni's "SelectGuest" program: an item pressed for free and (my favorite) morning coffee delivered to your door. Check-out was similarly efficient and polite. So, I have no complaints whatsoever about the hotel's staff--each interaction was excellent.
Where the hotel fell short was in the quality of the room. My room was in the main tower (the South Tower). It appears the rooms have not been renovated in several years, and they badly need renovation. The style is outdated. The carpet is drab and in need of replacement. The desk chair (which was a hard wooden chair, not an office chair) was terrible--it had faded fabric and had lost support in the cushion so badly I had to set on a pillow for decent support. The wallpaper was faded and starting to peel at the seams. The television was an old box-style set with grainy pictures; it was housed in a huge, old-style armoire with swing out doors. There was a shortage of plugs. I also found the room's layout a bit odd--the beds are on angles and there is a lot of wasted space in how the room was configured.
With a substantial renovation, this hotel could be great (again), but it's past due for an overhaul.