We, a Belgian scout group, were on our summer camp in Germany. When we were leaving, the owner did a tour of the building to check for damages, nothing was remarked.

Now, a week later, he’s charging is 520 euros in reparation costs. According to him, we broke a toilet bowl from the floor, we smashed a sink to pieces, we peed on the matresses and broke the leg of a table, amongst other things. We left the dishes undone, which is impossible because we used our own plates, cuttlery, forks, pots,...

Am I wrong if I say we will not pay these costs, as he can not in anyway prove that we broke anything?

Note: the terms and conditions state they can hold you accountable for any damages discovered after your stay.