What an amazing location and well fitted apartment. Our family of 4 were very comfortable and loved being in the heart of Paris. Metro and buses are so close by which makes getting around so easy with lots of great food options close by. Try Au Petit Versailles Du Maris for pastries, quiches, baguettes etc, a bit intimidating for rusty French speakers but good food to takeaway.
Yes the floor is creaky but it’s an old apartment on the second floor in Paris, if you don’t like a character apartment stay in a new build. The modern bathroom and well stocked kitchen have been the best by far we’ve stayed in France.
The bunk bed didn’t really suit our 17 yr old son, he found it tight and creaked when he moved, but it would work well for younger children. Our teenage daughter was very happy with the sofa bed.