We just got back yesterday from a driving trip to Florida using the I-75 route.
I was very pleased with the hotels we got using the "green" or "red" travel coupon books that are available at each state's welcome center and rest areas along the road. You can also view coupons on-line at roomsavers.com (also referenced in Dave Hunter's book) and the "red" coupons can also be found on-line. I always
Based on Dave Hunter's recommendations, and personal experience, I looked for Wingate Inns, Jameson Inns, Signiture Inn, Hampton Inn, or Fairfield Inn. These brands I have found have fairly consistent quality. I'm sure other brands are good as well, but I just haven't had as much experience with others (Quality and Comfort may be pretty good too). I drove past the Days Inn near Sweetwater, and it looked fine. You can find coupons for most of these brands. Don't think many will have indoor pools tough.