The apartment is truly exceptional. For starters, our flight was delayed by 1 hour and it took us 2 hours to arrive (demonstrations at Le Bastille and a strong rain storm). Pierre Louis was gracious and was more concerned about our troubles than him waiting for us for 3 hours. When we arrived, he showed us the apartment with patience and gave us some tips on cafes and boulangeries in the area. He had a bottle of wine and water waiting for us, with two loaves of bread. Fresh flowers awaited us in the living room (peonies, my wife's favorites). Each bedroom had an en suite and the entire place is very spacious. The place was a classical Parisian flat on the same block as the Musee D'Orsay. The metro was a block away in front of the museum. The Eiffel Tower is a 20 minute walk, and the Louvre is a 15 minute walk across the Seine. The Latin Quarter and St. Germaine was also within walking distance.
The only negative was the flat is on the 4th floor. Although there is an elevator, hardly two people fit together and 1 of the days, the power on the elevator was out so I ended up having to carry the stroller up and down. You can hardly attribute this to the owners but for those with heavy luggage or mobility issues, definitely something to think about before you book. The elevator is very quaint and adds a nice touch but definitely not comfortable.
When we ever return to Paris, we will be on the look out for this apartment. Magnifique!