We had a wonderful trip to Paris and lived the rooftop apartment. The location is perfect for visiting all of Paris. 30 mins walk sacre coure, le louvre, Notre Dame. Walk out front door to a wide variety of bars & restaurants. Just across road to a passage full of quaint restaurants that's so magical at night. A little market to right on thurs & possibly other days selling vintage etc. Picked up two leather jackets for €90
The apartment has all you need, two bathrooms are a big bonus with a group. Note the 3rd bedroom is sofa bed at top of stairs with doors to rooftop so not really private but does have bathroom. It was fine for us 6 of 2 adults, 21,19,18 & 17 year olds.
Quite few flight stairs up or very very small lift - so be aware . Not for less mobile or claustrophobic! It did get stuck with our 3 boys which although scary for me they took in their stride and Pascal came to the rescue.
I would use again and would recommend too