Staying in Brune's apartment was exactly the Paris-experience that we were looking for. The location in the heart of the city made us feel like living as Parisians as opposed to visiting as tourists only.
Regarding the pictures, one should know that the apartment looks a little bit more in use than what the shininess of the pictures might promise, but this doesn't take away from the experience at all. Regarding the description, one should know that the elevator is rather a small one, designed to transport 1-2 persons or some luggage only, but not a whole family with luggage at ones. Also, during our stay, the experience was not "very quite" as advertised - given the older nature of the building, we could hear the neighbors walking around, especially late evening, and with open windows we could hear traffic noise - it was still quite enough, however. People sensitive too noise might want to bring ear plugs though.
Overall, we can recommend the stay to everyone looking for adventures in the heart of Paris.