We unfortunately had to leave after only one night at Theirry's place. Our main problem was the overwhelming smell of urine, particularly in the bed area. Also, the blow dryer was a listed amenity and did not work for more than 30 seconds at a time.
When we contacted Theirry about these problems, he told us he would not be able to provide a working blowdryer and assured us that he has every confidence in his cleaning lady.
The urine smell was so overpowering that we decided to leave and get different accommodations. We contacted Theirry about a refund and he was very rude. He blamed me for using the blow dryer too long and too hot and said we should not be upset at a "trace urine" smell. We had to scramble to find other accommodations and spent a lot more money due to it being a last minute.
This was unfortunate as the apartment is in a great location, with easy access to eating, metro, and attractions.
The apartment is listed as fitting three, but I think no more than two would be able to stay here. I have stayed in many vacation rental by owners and have never had to leave early due to problems with the apartment or house. It ruined the first part of my Paris trip.