Expedia.com is what I always use. I think there's a Best Western nearby in Franklin near the Mariott that's about $70/night. I think you may have to cross the parkway though, but it's a little cheaper. Looks like there's also a Quality Inn & Suites in Franklin around $70, as well... Just go to Expedia and you'll be able to get all your options, how far they are from Franklin, pricing, and any amenities the hotel offers!