This is all about the location. On the 3rd floor (the way we count floors in the US) looking out 3 huge windows at the Saint Paul Metro station, gateway to the Marais, is endlessly entertaining. Note - it can be noisy. Earplugs recommended.
We have stayed in many locations in Paris and this has been our favorite. Grocery, bakery, pharmacy (since COVID tests are still required for US reentry) are all steps away. Also tons of restaurants.
The space has old world charm with tall ceilings and ancient beams combined with funky loft bedrooms to take advantage of those tall ceilings. It's certainly not fancy but fully functional and an amazing bargain if you need 3 bedrooms. (Note that there's no privacy in the one single bedroom).
Fernando, who manages the space for the owner, is super responsive.
Recommended, would stay there again.