I am so glad I chose to stay at Philippe's apartment, and want to stay here again next time I'm here. The private rooftop is reason enough to stay here. You have a 360 degree view of Paris, including the Eiffel tower. I really don't think there's anywhere like this. I sat on the roof every evening to read - it was beautiful!
Beyond the roof, the apartment has everything you need for a long stay. Everything has been well designed and thought out - the light placement, the ample storage / shelving, and well-equipped kitchen. I even had a friend stay for a weekend, who found the pull out couch comfortable to sleep on. The location is excellent - many grocery stores, restaurants, and short-term gyms nearby.
Finally, Philippe is just a lovely host and kind person. I'm very grateful to have met him and made a friend in the city! :)