My husband and I stayed here for 2 nights. The apartment had everything we needed for a short stay. The bed and pillows were comfortable and the windows let a lot of natural light in, and had a nice view of the rooftops.
Nadia and Olivier are lovely and accomodating, flexible with check in and check out. They live in the building so are accessible if you need anything. The location is great, lots of bars and restaurants near by, also close to the louvre.
We parked in the forum les halles parking, which is a few minutes away - we recommend pre booking as it cost more than we expected by not reserving a place before (€36 a night if you don't book) vs €25/night pre book.
The only issue I had is the shower was a bit awkward to use but manageable, there is a showerhead on a hose rather than wall mounted.
Would definitely stay again.