We loved the location of Carlo's apartment, just outside the centre in a typically French and less touristy area but still very close to a metro stop. Great views of the city from the apartment and would definitely recommend watching the sunset.
Carlo was welcoming and easy to get in touch with however there was a slight delay with our check-in. We had an early flight and had arranged to check-in at 1pm however Carlo didn't finish cleaning the apartment until 2.45pm which meant we had to wait about in the cold.
Overall, a nice place to stay in Paris!