Pretty great in terms of location. It's right around the corner from the Port Royal train station on the RER B line, which directly connects you to both CDG and Orly. Yet despite the fact that it's so near a train station and a major boulevard it's relatively quiet. The building is very secured, and multiple doors and locks to get in. However, do note that the apartment is on the 6th floor, and the elevator only goes to the 5th, so you have one flight of stairs to climb. The apartment is small, but has everything you need for a comfortable stay, including a full kitchen, refrigerator, and even a roaster oven. The bed is comfortable and decently sized for one person. The only thing I take issue with is the orientation of the toilet, which is right up against the shower, it leaves you very little room to sit or stand over it. I did not meet Ketty but her husband Loic was there to greet me on my check-in. He was right on-time, very nice guy, but speaks not much English, which was not an issue for me since I speak fluent French. I had a very nice stay and would definitely recommend it to other people, especially if you want to have a private and conveniently located apartment all to yourself during your stay in Paris.