On the way Paris-Toulouse, take the Angoulême exit (interchange 28).
Follow the direction Poitiers and Bellegarde by the RD2000.
Leave the Poitiers exit on your right, and stay on the RD2000 following the direction Bellegarde.
In the direction Toulouse-Paris, pass Limoges,
stay on the A20 and take the exit Poitiers (exchanger 28)
Then follow the direction Poitiers by the RD2000
Leave the exit Poitiers on your right, and stay on the RD2000 following Bellegarde direction.