I really loved staying at Antoine's place. It was clean, stylish, and really well located. He and his family were so warm and welcoming, and they did everything possible to make my stay a good one.
The room opens up onto a lovely garden, so even though you're just steps from the hustling Rue Daguerre, the Catacombs, and the Denfert Rochereau metro/RER station, you feel like you're in the countryside.
One little thing to note: the shower and sink are private (and very nice!); the toilet is shared.