You could try
www.formule1.com, is a company with hundreds of hotels around france, they are, i believe, the cheapest option, you can use their web to see where is the nearest one to LFPB, you can book online.
I used it a couple of times and is good quality vs price (depending on location from 23 to 30 euros per night).
TV in the room, double bed, toilets and showers are not in the room, they are shared.
if it's only for 3 or 4 days ok, if it's longer i sugest you go to the kyriad, at least theere is a restaurant, in the formule 1 there is no restaurant within the hotel.