Walter and his cat were very accommodating. He has an extra room in his apartment which he makes available. It is a perfect little room for stay in Madrid , if you want to spend the day exploring the city. I would suggest that Walter let people know before hand that the cat stays inside the apartment and therefore has a cat box . Could be difficult for asthmatic people to stay there . The cat is very friendly so if you are a cat lover, then come stay with Walter too. Overall he was very nice and I would stay with him in Madrid again