We (my wife and I) visited Paris for five days and were out and about whole day and every day. Romain's place was by far one of the most quiet place we've ever stayed (and we do travel not infrequently) allowing us to get good nightly rest and sleep. It's quite amazing considering that this place is located in the midst of congregates of restaurants and cafes, not to mention tremendous proximity to metro and RER (one train ride straight from air port to literally two blocks to the apartment). Many of the attractions we wanted to see was within walking distance. The apartment had everything we needed, and oh how about Romain's detailed guide book with info on where to eat and shop.
All that added to Romain's kindness will certainly find me staying in the apartment when I come to Paris next time.