We had a great stay at Sebastien's apartment. It's a small, but cozy place. A tight squeeze in some spots, (like not being able to stand up out of bed) but we grew accustomed to it as Sebastien has used the space efficiently. An apartment most likely best for a single traveler or a minimalist couple.
It was quiet for the most part with the exception of occasional noise from the restaurant below. The apartment was well kept with very modern amenities. The few sticky dishes or somewhat greasy kitchen floor was easily shrugged off by a organized, clean, and homey ambiance.
Sebastien was truly a super host from beginning to end, being prompt with responses, delightful when welcoming us to the apartment, and available during questions and concerns through our stay. The recommendations that he provided in his little homemade guide of the area were excellent. The location is fantastic, just a stroll away from Notre-Dame and other site-seeing landmarks, with a wide range of great restaurants, grocery stores, and markets steps away. All this made for a lovely time in Paris. Would stay again!