Catalina’s place is a modern version for Parisian classic individual apartment. It's tiny but it's clean, bright and tidy. Except for the shower does not work (warm water barely last longer than 8 mins), other things work fine. What I appreciate the most is the quietness in the building. It's kind of rare in Paris.
I will recommend this apartment for solo light traveler. Summer will be a better time as you don't need to worry too much about the cold shower. The apartment is a bit too small for two people, maybe even not enough for one person with a checked-in luggage + big backpack. However, if you are not going to stay around the apartment, it does not matter that much.
It's true that it's not too closed to the city center but there are a lot of interesting shops and restaurants around the neighborhood. And it is safe to walk around at night there.
I did not meet Catalina in person but her arrangement of check-in.out was perfect. Her friend in-charged of this was very friendly and polite.