Catalina's place was great! Luiz handled the check-in and check-out and was always available for any of our questions or concerns—fortunately, we didn't have any.
The room itself is small, very clean but perfect to accommodate two travelers with carry-on baggage only.
Catalina's place is central to most areas you'd want to visit in Paris and is located really close to public transit, as well as the Gare du Nord, which was very helpful if you come by Eurostar from London (as we did and as many other people tend to do). There are also a lot of small cafes and brasseries in the neighborhood, so there is no shortage of places to eat.
All-in-all, a great value for a very central location in Paris—I highly recommend booking this location for any short to mid length trips!