Alice’s flat is absolutely wonderful and unusually spacious for a Parisian apartment. You’ll have to walk up a lot of stairs to get to it, but it’s absolutely worth the effort for this loft apartment.
And the location is incredible as well—it’s in a quiet alley in the Latin Quarter. So, while there’s a lot to do in the immediate area (cafes, etc.), the alley protects you from any noise.
With all of that said, I highly recommend staying in Alice’s flat.