The Galleria is a great area to stay in and it has less traffic than the Downtown Dallas area... Also on Hotwire.com you can find 3.5 to 4 stars hotels in the area for around 40-60.00 a night depending on the day you check in etc... You can pm me for more details if you want for specific hotels in the area that are provider friendly best restaurants, places to avoid etc...
Have a safe and wonderful trip