For anyone traveling to Quimper vie CDG Airport, I can recommend the Hotel Geograph (https://www.geographotel-roissy.com/en/) at Le Mesnil-Amelot for an overnight stay if your flight arrives too late to get a convenient train to Quimper. The hotel is in a village very near the airport and provides a FREE shuttlebus from and to your terminal. It is a three-star hotel and the personnel are super sympa .....
By the way, you can get a train to Quimper (probably changing at Rennes) from the TGV station in Terminal TWO where flights from Japan arrive. This is much better than having to go to Gare Montparnasse in Paris itself.
The Geographotel cost 67€ and the single from CDG to Quimper another 68€, which I thought was very good value-for-money.