Many providers use hotels on the southwest corner of 820 and Beach St. I personally avoid the area, so I would stay away from that area. Hotels near the DFW airport seem to satisfy the Ft Worth guys and are a reasonable drive for the Dallas guys.
Living North of Fort Worth for me, its nothing to drive up to an hour away if i want to see a quality lady. Glad to see more and more sexy ladies in Fort Worth area. Dallas for me is an hour at least. More if traffic is bad.
Being from central Dallas, to go to West Ft. Worth (like Bryant Irvin) is a haul, especially if it is off I20. I have to leave at least an hour in advance, and that is if it is a weekend. I wouldn't even contemplate that drive during the week. I would suggest staying east of downtown (including HEB as several have mentioned) if you want to realistically have lots of Dallas guys as potential clients.