YES. I've stayed at the Omaha doubletree many times. We stay there because of the client corporate rate. Actually, I'm writing this from a room in the Omaha doubletree downtown.

1) Deskstaff - It is a mixed bag. Some of the managers are quite friendly, others such as D** have no idea what customer service mean. Let's just say the entire staff could benefit in customer service training.
2) Breakfast buffet - well, they spent money to upgrade the buffet counter, but then reduced the quantity, variety, and quality of the food. But nice new sneeze guards. For awhile they had an omelet bar, but apparently that is connected to whether or not the executive center is booked. Based on the last few months they had the omelet bar up and running about 3 mornings over that entire period.
3) Rooms. The big suites end in 32 - so there is one per floor. BIG, each has a hot tub, etc. Otherwise the rooms are small and dark. Functional and reasonably clean, but showing wear and tear.
4) Inconsistent service. Sometimes my bed is turned down, sometimes it isn't. Sometimes I get two free bottles of water per stay, sometimes two per night, sometimes none. Once I got four for one night.
5) Super old plumbing. Enough said.
6) Slow elevators. They are always fixing the elevators and often the wait in the morning is unbearably slow.
7) Odd upgrading. As a gold I was often upgraded to mega suite, but as a diamond I usually get a small room.
8) No executive lounge, etc.
9) Old market is not far away, but not easy to walk during winter. It is cold in Omaha!
10) High speed internet - they finally installed this in the rooms.

Hilton Garden Inn - newer hotel, more expensive than doubletree, rooms are very cookie cutter, free high speed internet, superior breakfast, closer walk to old market.

Food suggestions for Omaha: high end = V MERTZ. Middle: Jams, Stokes, Sushi Japan (surprisingly exceptional).