I'd like to start out by saying that this apartment is in a wonderful location in the 2nd arrondissement and offers a very good value alternative over a hotel room or two. We were a short walk to Le Marais, Rue Montorgueil, The Louvre, etc. Public transportation was also close, as there was a Metro stop on the corner and a bus stop across the street. The apartment is very spacious and a nice place to relax after long days exploring Paris. We were able to sleep five (2 adults, 2 teenagers, and a 10-year old) comfortably.
As far as the conditions, I would say that the apartment is a bit tired and could use some cleaning up. There were a few things that were broken when we arrived like the faucet in the kitchen sink (still functional), a drawer in the kitchen and one of the heaters in the bedroom. Unfortunately the washer/dryer also was not working properly, as it would not drain during the first load of laundry we looked to do. Be prepared to go to the Monoprix, which is right next door, to purchase some basics, as we had no paper towels in the kitchen and were left with half a roll of toilet paper. Certainly not enough for our four night stay. The apartment also didn't have dishwasher detergent for the dishwasher, so the previous guest may have cleaned them by hand but the dishes and glasses in the cabinet were not clean and dusty.
Given that, this is a good place for a short term stay if you can live with some of its imperfections.