We had a lovely stay at Guilherme's apartment! The room is great and there is more than enough space for two. The cats are really cuddly, but you can of course close the door if you don't want them in your room. We only met Guilherme's wife - she was super friendly and gave us a lot of tips for restaurants or places to visit. You have several metro stations nearby, so it takes only a few minutes to the center of Madrid. All in all we had a great trip to Madrid - mainly because of the great hospitality! Thank you again, we enjoyed every minute!