Disappointed - Won't Be Going Back
My wife and are local to Dallas, and decided to spend a night at the Omni just for fun. Since it is very new, we thought it would be fun to check it out. Location is just OK, there's not much to do within walking distance. There are better options on the other side of Dallas if you'd like to be able to safely walk around at night, and that are much closer to the night life. This hotel is over on the East side of Dallas, right beside the Convention Center. If you aren't doing something there, you'll probably want to pick some place else. The hotel is not nice enough to just enjoy the hotel by itself. 
My wife and I travel a lot, and consider ourselves very low maintenance. We never really ask anything of staff so I don't have to comment on this often. But, when we checked into our room, one of the first things we noticed was that the toilet would not stop running. Obviously his is pretty loud and distracting. I tried to jiggle the handle and look in the back. I couldn't get it to stop. So we call down to the front desk and let them know. They tell us no problem, someone will be up right away to fix it. Over an hour later, we call down again. The person said nothing about it was in their system, but he'd do it right now and send someone right up. It got to be 3 hours gone by, and still no one to fix it. So we walk down to the front desk and ask one of the agents what's going on. She looks in the computer, and surprise, there's no record of it again. So we watched her put it in this time, and told her we'd be leaving for dinner. She told us someone would fix it while we were out. This time they did. When we returned to our room it was fixed. But we were annoyed that you can't trust them to do what they say without physically walking down to the front desk. 
The next problem we had was the hotel security personnel. We knew it would be a wild weekend, because it was Texas / OU weekend. So the hotel was full of college kids. Of course that night they were being very loud. I was surprised at how thin the walls seem to be with the fact that this is a new hotel and all. Of course we could hear music and the occasional yelling. But we didn't complain because we knew it would be the case this weekend. But some guest did complain, because security came up and told them to be quiet. Normally you would appreciate that right? Well I was woken up at 3am, not by the college kids, but by security yelling and banging on doors in halls. I meant YELLING! I was glad I didn't have any kids with them. They were yelling much louder than I had heard any of the college students doing, and what's worse is they were swearing at them, really bad language. I didn't understand why they had to be so loud. The kids opened their doors and were talking with them, but these security guys just went way overboard. I can understand losing your patience, but it was embarrassing how far they took it. 
This ruined our perception of the level of professionalism and customer service at this hotel. We will not be back. There are much better hotels in Dallas. I recommend you look elsewhere.