I didn't have a pet with me but I saw other customers that did. They do welcome pets.
The breakfast was good! 2 types of bread, ham, Swiss cheese, orange juice, scrambled eggs, boiled eggs, assorted condiments, and excellent espresso, coffee, or cappuccino.
The only constructive criticism I offer is I wish there was an in room Keurig or kettle for evening herbal tea. Also a vending machine in the lobby would be nice for late night snacks. We stayed in a tiny house and it was quiet and private.
Overall we were very satisfied with our stay and would recommend it to anyone visiting the Trier area.