frankly speaking, the stay in Laurent's flat is fairly OK apart from what happened after we left. We stayed three nights in the flat. On the morning we left, we got up early and put almost everything in order and did a basic cleaning.Suddenly, my friend's 9 years old son got nose bleeding and stained the sheet. His mum pulled the sheet from the bed immediately, hand washed the dirty sheet and then put the sheet into the washing machine. We felt sorry for that, so we left 30 euros as cleaning fee. I texted the host after we left and he said it was fine. Two days later, I got a money claim for 100 euros from the host who said the boy probably urinated on the bed and ruined the mattress. We were very surprised and explained what happened that morning. But the host still insisted we pay for the "ruined mattress" which we never saw. I had no choice but resorted to the AirB&B customer service center. After investigation, Air b&b said we take no responsibility in the case and we have every right to reject the money claim. So we did. I just want to remind travelers who might choose living in flats like this that be careful.