Romain's apartment was very nice. It was clean, very well-equipped and in a great location. It was also amazingly quiet. The apartment is very close to the RER station on the direct route from CDG and it only took about 40 minutes from the airport to the apartment, Check-in was easy, there was a lot of helpful information about the area to read and the Wi-Fi was excellent. Communication with Romain was also excellent - quick responses and clear instructions on getting to the apartment - and he was very accommodating to my needs (wanting to check in early after travelling for 30 hours).
Overall, I had a great time at Romain's apartment and would gladly recommend it to any of my friends travelling to Paris.