Katherine had her housekeeper Magda meet us to give us the keys when we arrived. The apartment is quite small which we were aware of but we didn't realize just how small it was. It would be good for a three day weekend but we did make the best of it as we were there to tour the city not sit in the apartment all day. I had a few emails with Katherine when we arrived because I did have a few questions. She responded right away to me. We stayed Saturday through Saturday. On Friday, the last day of our trip, the toilet clogged in the early morning. I emailed Katherine to let her know and to ask what we should do. She came to our door within minutes, she didn't introduce herself, was very unfriendly and accused us of breaking her toilet. We explained that we were only flushing the toilet paper that she supplied to us and she did not believe us. She was rude to us and said that she was going to have to cancel her plans and call her plumber to come and we would need to be there as well so that when the plumber pulled whatever was clogging the toilet, we could see it was our fault. What??? We had to cancel our plans to visit the Louvre to wait for the plumber. The plumber came and tried to fix the toilet, sent Katherine shopping for a snake long enough to unclog the toilet. He explained to us that the toilet paper she supplied to us is not the correct kind and that was the reason the toilet was clogging. She returned with the materials and when we told her what the plumber said, she still would not agree. She said that the plumber who originally installed this toilet system told her that this toilet paper was ok to use. Ok, not our problem or our fault. The plumber said the plumbing system she has installed it quite complicated and most likely wasn't installed properly. She explained that because of this problem we wouldn't be able to stay there that evening and would have to find a hotel. She said she would reimburse us for the one night because of this situation. We contacted Air BNB to let them know what was happening and then came to find out the next day that she refused to reimburse us because she still believed we broke the toilet. We now have a case open with Air BNB to get this resolved. I did email her directly after she refused payment and this time heard nothing back from her. I do believe she knows this wasn't our fault but was just so mad that this happened that she is trying to put the blame on us and won't reimburse us.