Train
TGV High Speed Train - This 1.5 hour train ride will take you from Paris to Angers where you can rent a car or taxi/uber to the chateau (~20 minute drive) If going direct from CDG, this train takes approx. 2 hours
Rental Car
Plenty of rental car options at CDG & Nantes- the chateau is a 3.5 hour drive from Paris (CDG) or 1.5 hours from Nantes (NTE)
House Or Rental