We spend 4 nice days in Paris. Alice's apartment is very cute and we enjoyed our time there.
The 6th floor is far to walk (especially when you have to carry a stroller and a small child as well) but we managed and once you're up you can enjoy the nice balcany and the view. We sure did along with the music from the street which really set the perfect atmosphere!
The hot water comes and goes, the kitchen has no oven and the internet was a bit unstable but these are minor cons.
In all a great place to stay while in Paris.
PS. It could have been nice to have a small guide to the neighbourhood (best cafés/restaurant, where to find post office, bakery and supermarket and such)