I suggest renting a bedroom, with breakfast included, in my town house in a quiet place with all amenities Bordeaux 2 steps: Bakery - Supermarket - Post - Bank - Press and easy access to the train station 5 min by Bus.
House located in a very quiet street.
You'll find the center of Bordeaux in just 10min by bus which is 300m from my home or bike in less time with the Vecub. (bicycles of the city like Velib in Paris)
You can park your car in my street is a very quiet street or in the parking lot of the church at the end of the street.