It is so sad when landlords say "no pets allowed"
We used to own an appartment at the Belgian coast. We went there almost every weekend. During July & August, we put it up for rent. We always allowed pets, but asked a deposit. We only had to keep the deposit once: a big doggie had torn of the paper in 2 rooms and had also been peeing on the carpet. The owners of that dog agreed with us! All the other periods went fine!!
We sold the appartment 3 years ago, as we were having our new house built and needed the money