I have stayed at Paris numerous times in the past and recently returned from a stay over the Christmas holidays.On several occasions in the past we had noted lots of people with their dogs in the hotel and even heard several yapping dogs on our floor. Since I'm highly allergic to animal dander I wanted to keep my distance from dogs and even made sure to request a "non-pet floor" when booking my reservations as I did this time. However,upon check-in,the person at the desk said while we could request a non-pet floor they could NOT guarantee that the room hadn't been previously occupied by someone with a "service" dog. The hotel was allegedly required by the American Disabilities Act NOT to discriminate against people with dogs,although I'm not sure if any proof of medical need is required to book a room with your "pet". I also don't understand how requiring someone,even with a "service dog" to stay on a "pet floor" could be considered "discrimination".As it turned out,the moment I entered my room,I began sneezing and coughing and feeling short of breath. Luckily I had several prescription medications along but they provided little help. When I called and spoke with a manager,she was very nice and polite but could only say that I could call the following morning to see if there were any other rooms available that I could switch to. There were not, so I was subjected to this room where my allergies made my stay miserable. I have since returned home and as is often the case,I had to see my doctor and was prescribed antibiotics for what ultimately became an upper respiratory infection triggered by my allergies. This circumstance totally ruined the trip for me and since Paris can no longer guarantee I won't be subjected to "dog rooms",I will no longer book reservations there after several previous stays. I guess the days of dogs being taken everywhere are here to stay.