Hotel
This hotel is a 15 minute drive to Riverwood Mansion and very close to the Opry Mills Mall. We have reserved rooms at the rate of $159: https://www.marriott.com/events/start.mi?id=1624379841792&key=GRP Feel free to book through Priceline, Expedia, Trip Advisor, or any other site if you find a better rate! This link is active until August 5th.
Hotel
Airbnb is a great way to find a place to stay and get a good feel of Nashville. I would recommend East Nashville or get even closer to the downtown to enjoy Broadway Street.
Travel Note
VRBO is another great site to use to find great homes to rent in Nashville.