Kay is responsive and flexible when it comes to accommodation. Because of train strikes and cancellations, we had to arrive in Paris a day in advance, and Kay was extremely flexible to let us stay the extra day and make check-in arrangements. The house is good, clean, and is walkable distance to the train station that takes you to city center in 15 mins. Just two things to note: 1) The apartment is on 5th floor and there is no elevator (typical Parisian houses) so think twice before bringing any heavy luggages 2) The house is in the 18th district which is known to have a few shady areas. We didn’t face any issues at all in terms of safety, but you should be careful walking back from the train station late in the night (around 5 mins walk).