There are 2 hotel options in St. Francisville.
The Magnuson - A little bit older, but closest to the fields. Best to book it before it fills up.
Best Western - This is another good option and a newer hotel.

Closest hotel after that is a Holiday Inn in Zachary, LA and can be found here as well as others on hotels.com

 

Camping at the fields is not allowed, but there is a camp ground within 5 miles of the fields.
It's called Peaceful Pines RV Park.It's $20 a night for tent camping and $30 for RV's. Be sure to mention frisbee.