I stayed in Youssef's apartment with my parents and brother for 3 nights and we all had a great time. I would say it's the best option to visit Paris. I highly recommend it.
Location and Neighborhood:
The neighborhood is very nice and clean. Supermarkets, Boulangeries and Bistros are close by.
The location is few minutes walk from Eiffel Tour, you can also walk to Trocadero, Louvre...
2 or more Metro Stations next to the apartment. The bus 39 is also very close it can take you straight to Louvre.
The apartment:
The apartment is very clean and was equipped with everything we needed. The bed and sofa ere very comfortable and the bathroom was large and bright.
The hosts:
Youssef and his wife are very kind and were very responsive during the stay. we were welcomed nicely and had a nice bouquet of flowers in the living room.