From Paris or Bordeaux  by A10: 

• Take exit 24 and follow direction Saumur/Joué-lès-Tours/Chinon
• Follow D37-E60 Joué-lès-Tours/Chinon
• Take the exit in direction of A85 Saumur/Chinon/Ballan-Miré
• Carry on on D751 and take exit N°10 Ballan-Miré
• At the roundabout, take the 4th exit and carry on on D8
• At the roundbaout, take 1st exit. Rue de la Briaudière
• Turn right at the 1st gate, then go ahead up to the 2nd building

From Angers/Saumur by A85:

• Take exit 9
• Carry on on D751 and take exit N°10 Ballan-Miré
• At the roundabout, take the 2nd exit and carry on on D8
• At the roundabout, take the 2nd exit. Rue de la Briaudière
• Turn right at the 1st gate, then go ahead up to the 2nd building