Excellent location, as others have noted. Great security feature with having multiple locked entries (which also made for great noise barriers).
We were permitted to drop our bags off early, and Lincoln communicated well with us before and during our stay. He promptly answered any questions and resolved problems quickly.
The apartment is as described, with a few notes. It was quite hot and humid when we arrived, so the apartment air was quite stale (an extra fan or two would have been great).
The central (building) courtyard is currently under renovation, so you need to walk through construction to get to the building.
There is no true courtyard directly adjacent to the apartment, as described. There is a small and dark concrete pad, accessible only via the window. There are no ladders to the roof (so I’m not sure what a person might do in the event of a fire, should the main exit be blocked).
The loft has a very low ceiling, as described. It’s so low, however, that my 7-year old child chose to sleep on the couch rather than in the loft.
The stairs to the loft are very steep (somewhat of a cross between a ladder and stairs). The stair railing ends before the stairs themselves end, so pay attention. My first night there, I wasn’t paying attention and stepped off when the railing ended. I fell down the remainder of the steps (about two or three), and had a hairline fracture of one of my toes. I’m not placing blame on the owner for this, I’m simply urging caution.
In sum, it was a good location but an uncomfortable stay. I’d stay again, if I had only a few days in Paris.