Would definitely recommend!
We stayed in Laurent's apartment for six nights in August.
The apartment was perfect and looked exactly as it did in the photos.
Newly renovated and stylishly fitted out with designer furniture, it was ideal for a couple with kids or a small group (with two full size beds, and single beds in the loft above).
The apartment building was very centrally located in a chic part of the Marais - with cafes, bars, bistros, green grocers nearby, boutique shopping and just a few mins walk from the museums and Metro.
It is on the top floor up several flights of stairs so if mobility is an issue for you that's something to consider, but similar to most flats in Paris.
Laurent made sure his colleague Gregory met us at the room, and was very helpful with checking in, even though our flight arrived late.
The only thing to note is the front door's lock is quite stiff so it can be hard to open.