We've had a wonderful time and a great stay at Alfred's apartment. He was very helpful and available for any questions/concerns that we've had. The apartment is very obviously lived-in (which is the point of airbnb anyway), so those looking for a more hotel-like experience should look elsewhere.
A rather nice bathroom, the sofa bed is very comfy and the linen was clean (just washed). The apartment is more spacious than the others in the area. Most importantly, the location is perfect - in the heart of Marais.
@Alfred thanks for everything!