Thierry's apartment is fantastic. The location is wonderful, easy walking distance to great sights like Notre Dame and the Pantheon. It's also close to some great markets, Rue Mouffetard, and the metro is just a couple of minutes away!
The apartment itself is perfect for a couple. It has a small but well equipped kitchen, a great shower and a cute little balcony with a table and two chairs.
Communication with Thierry was fast and easy, and picking up the keys was easy too, even though we arrived late in the evening.
I would highly recommend it to anyone, and we will definitely be staying there the next time we're in Paris!