Romain's place is great! Small but clean, well laid-out, and efficient, and in a good location to balance seeing the major sites of Paris (5 min walk to Metro stop) and for exploring lesser-known neighborhoods like Belleville and Menilmontant. As others have noted, the stairs up to the apartment are quite steep and there are quite a few of them, so take that into consideration, but the apartment itself more than makes up for them! I would definitely recommend this place, and stay here again!