Slightly concerned at booking because Pierre's place looked amazing but I was coming at the height of high season and it was a great value, but no need for worry. The apartment is just as cool as the pictures, description, and reviews suggest. It is at the top of the building (and the stairs), and has been retrofitted with two skylights and a loft kitchen with more windows that give it light and an airy feel. It is smartly decorated with nods to French style without being cartoonish in the least. And it is superfunctional and modern for an apartment in an historic building. Plenty of power outlets and solid Internet service.
It is all the way up a bunch of stairs, but, hey, welcome to the historic section of just about every European city. The intermediate entry door doesn't have an electric button, so it does feel like you're using keys all the time (you can't exit that entry without the key). And there's no central air conditioning. I'm the kind of high maintenance sleeper that needs a cold room at night, and I couldn't achieve that in this apartment. But there are two fans and lots of windows, so the second night was better once I did some advance air circulation planning earlier in the evening.
I rented a bike for my stay (and pedaled to Lacanau and Cap Ferret), so it was really great that Pierre's building has a storage room and bike rack. And the location of the apartment was perfect, nestled between the old city and the rising southern neighborhood, and just across the bridge from the Darwin complex.
Pierre himself? A gem. Clearly works hard and cares, about the place and his guests. Check-in and check-out were a breeze, and fully adapted to my schedule.