Damien has a lovely apartment, which was exactly as described. We were two adults with 2 teenage children who were happy to sleep on the sofabed (it was a last minute booking) and the apartment was plenty big enough for us, for our short stay. The apartment is well furnished and both the bed and sofabed were comfortable. One point to be aware of, if you are planning to use the sofabed, the lounge is bright with big windows and does not have any blinds, so light sleepers might struggle.
The apartment is excellently located in a quiet residential street with bars, restaurants and the La Tour Mauberg metro station nearby. The area felt safe. It is just a few minutes walk to the Eiffel Tower, Hospital des Invalides and the Seine.
If you are travelling by car, there is no parking but here is a tip. We deposited the car at Cambronne underground parking (see parclick). It was about 15-20 minutes walk but was about half the price of the others (35€ for 4 days). We did wonder why but the car park seemed perfectly safe and we had no problems at all.
In conclusion, would we recommend Damien's apartment? Absolutely 100%.