The mattress is very soiled with food and liquid stains. The lodger was often not using a sheet, and was removing the provided mattress protector. Despite hoovering the mattress, febreezing it, airing it for 1 week it remains extremely malodorous and it would be unreasonable to expect someone else to use it in this condition. I have photographs showing the damage. The mattress was 1 year old when the lodger moved in and there was no damage from the previous lodger. The walls and carpet are soiled with fluids. I have photographic evidence of the current and previous states.
Thank you for your answer.
Could he take me to court to try and get the money back? He is adamant that he is not going to pay for the mattress. As I do not have a forwarding address it is difficult for me to enter correspondence with him such as itemising the costs and why I am making the deduction from the deposit.
Okay thank you very much for your help today.