Does the tenant have the right to claim the value of the new mattress he bought after his mattress was damaged due to the landlord's prolonged failure to repair a defect in the window, knowing that the landlord had provided a mattress in the rented house?

The lessor is obligated to repair any damage to the leased property that is not caused by the lessee, or by ordinary use. If the lessor fails to do so, the lessee has the right to terminate the contract. If any of the lessee's belongings are damaged due to the lessor's failure to repair, the lessor is liable for the damage. Fungible items are compensated with their like, and non-fungible items are compensated with their value, while the damaged item remains with the lessee.