Great Hotel, Working Out a Few Kinks
I had to fly into Dallas on business last week and we stayed at the Omni Dallas Hotel, located and connected to the Convention Center. It's a relatively new hotel, very modern and very large. The rooms are beautifully appointed and the hotel has some great ammenities including very nice health club, business center, excellent restaurants and even one of the nicer gift shops.
The "down side" is that there is no shuttle from DFW so if you are staying here and can work it out, better to fly into Love Field than spend $50 on a cab each way to DFW. 
The only two complaints I had were the check in process - although the staff couldn't have been nicer or more helpful, it was a bit disorganized and lines long. Given the size of the hotel and the volume of business, I think things can be improved. The other issue is the excessively long wait on the telephone just to get an operator or guest services. I had to call twice, and both times the wait was so long I ended up hanging up and tried at what I thought would be a slower time, only to have the same situation repeat.
All in all, this will be a great hotel and a great property, but it needs to work out some early kinks to get move it from good to great.