Great apartment, in a very central location. Large enough for two. I was welcomed by Zach, who was kind enough to let me know that the apartment was ready an hour before check-in time.
It is located on the top floor (5th or 6th) of a very old building -- so if you have trouble going up narrow stairs, then this is not the place for you.
I loved that there was a lot of light once you arrive in the apartment, even though the streets in the Marais (and the building's staircase and corridors) are really narrow (and sometimes dark).
The apartment was very clean, everything was in order. The fridge (as Zach mentioned) was a bit loud, if I paid attention to it, but it really is not a big deal. There is a washing machine, but I didn't use it.
The bed is comfortable -- but a little on the soft side for me. I imagine most people would find it just fine.
The bathroom is functional (shower, sink, loo).
I loved the Parisian rooftop views. both on the kitchen side (inner courtyard), and the bed/living area side (street).
I was in Paris for work, so it was nice to come back to a quiet place, and that it was conveniently located made it all better.
I was very pleased overall. Thank you Zach (and Pierre Alain) !