WORST experience. Building is completely rundown, filthy, and lacks all Montmartre charm. Neighborhood is lovely and walkable which made up for the miserable conditions within the apartment. My main complaint is due to Yann’s choice to not disclose that he has a cat. Myself and my boyfriend are highly allergic to cats and became ill within 2 days of our stay. The bed sheets, linen, and all furniture are covered in cat dander which caused a constant, and irritating “itchy” sensation for all 3 of us guests. (Side note: towels were painfully stiff and had odor) Above everything else, the biggest disappointment so far has been Yann’s response to my request for a refund. Air bnb affords guests the opportunity to request a partial refund for a number of reasons pertaining to a negative experience. The website even gives the specific example of an animal that wasn’t disclosed prior to booking. Yann responded somewhat aggressively to my message citing that he is a “lawyer for a large company.” I’m not sure if this is meant as a threat or what the alternative purpose of this mentioning may be (although he did admit to having a cat). The situation is still currently pending but I feel the obligation to acknowledge these circumstances for the benefit of potential future guests.