My friend and I stayed at Jean's place over the Christmas period and it was great. The location is very central with everything you need on the doorstep including a supermarket, loads of restaurants, churches, transportation and the beautiful Jardin du Luxembourg just 10 minutes walk away where we went every morning for a jog.
The flat has an open plan kitchen/lounge with everything you need. The
bedroom leads off of the lounge and has an ensuite shower. The shower cubicle is large and spacious with two shower heads (one is a waterfall shower head).
The sofa is glorious although we didn't end up using the sofa bed because the bed in the bedroom was large enough for my friend and I to share.
Jean was a fantastic host and was quick to respond to our queries whilst we were in Paris.
All in all, I have no complaints about the apartment. I will definitely be using Jean's apartment when visiting Paris again.
One more thing. As stated in the description, the flat is on the 4th floor with no elevator but that was fine with us as we are pretty fit and didn't have loads of luggage. You will find most apartment blocks in Paris have no elevator.