Location couldn't be better, check in was smooth, no major problems to note! Some nitpicky issues - the place is small and there's not a lot of room for storage, or a lot of places to put your personal effects. For example, there aren't shelves in the bathroom or bedroom. I was traveling alone and felt like my stuff was everywhere, short of re-packing into my luggage constantly you have no choice. There was a small closet. Also, this is true for a lot of places in Paris and especially the neighborhood, but these stairs felt particularly creaky/looked like they were due an inspection.
Didn't use the kitchen except to make coffee but it seemed well-equipped, wifi worked fine.