Pascal's apartment in the 2nd arrondissement is a gem! A group of five adults stayed for a week and were quite comfortable. I can confirm the location is close to nearly everything you want to see in Paris and that there are more than enough cafes and shops steps from the front door of the building. Be prepared, the elevator is small (by US standards) but not inconvenient (it will comfortably carry no more than 3 adults at a time). The six flights weren't difficult to ascend or descend for anyone in our party.
It looks exactly as shown in the posted pictures. The two bedrooms are on opposite sides with the living/dinning room/kitchen in the middle. One overlooks a street and the other a courtyard of sorts. The rooftop "bedroom" has its own full bathroom. The rooftop loft does lack some privacy because it's an open area that opens to the rooftop, but our friend found the space acceptable. The stairs to the rooftop are steep but not treacherous. All of the appliances worked great. We were very thankful for the washer and dryer!
The rooftop is worth it. The location is worth it. The inconveniences described in other reviews are very minor in comparison. The wifi is fantastic (there is repeater now), we were able to have five adults and two extra devices online simultaneously with no issue. There are also fans in each bedroom. The apartment allowed us to base from a great location. Bonus - the local cafe on the corner, The Boulline. Literally steps from the front door and the staff speaks English. We appreciated their patience and good food.
All of us would stay here again.