I stayed at Catherine’s for two weeks with a relative while vacationing in Paris. Catherine’s studio exceeded our every expectation. It was extremely clean, well-kept, and fully featured. The interior design is gorgeous. It has been cleverly designed to accommodate a lot of storage and many appliances without crowding the place. The two balconies have very beautiful views and kept the house cool. We were there during the hottest day in Paris and it was more comfortable in the studio than out in the street.
The 18th arrondissement is very pretty and feels much safer than other parts of Paris. Everything one might want is a 5 minute walk from her door. Montmartre is also not far by foot. Metro stations on the 4th and 12th lines are quite close as well.
Catherine herself was very pleasant in our interactions prior to reaching Paris. She was available for all our questions and responded quickly. During check-in she was warm and approachable. My French is limited to small talk, but Catherine was able to communicate the essentials during the check-in in English. We did not need to be in touch during our stay as everything worked smoothly, but I am sure she would have been responsive.
Overall, this was an exceptional stay for us. If I were to visit Paris again this accommodation would be at the top of my list. Apart from the studio itself, I found the proximity to some of the nicest areas in Paris to be very convenient - I found myself walking back from the 10th via Montmartre quite often.
Highly recommended.