Sophie's mom was extremely nice and helpful. The apartment is in a good location, very close to the Metro and a few bus stations that will take you anywhere you need to go.
Unfortunately, there is a lot of construction going on. It was very loud starting at 7 am every morning, making it impossible to sleep past that point. We did not spend much time in the apartment during the day but if you are planning on staying in, I would imagine the construction would make it very frustrating.
Overall, it was a nice place and the balcony was beautiful with a great view of the Eiffel Tower, especially at night. Sophie's mom left us a bottle of wine and some frozen treats to enjoy. She was great! The apartment was wonderful!