Carlos is great! He's very welcoming, informative and organized. He had maps highlighted with walking tours, restaurants in the area, and grocery markets.And, we had asked about Sunday Mass, so he had schedules for 3 churches in the area. We arrived almost 2 hours late and he was very understanding and accommodating. It's a beautiful, spacious apartment with views of Madrid architecture from the wonderful large balcony where we enjoyed breakfasts and a dinner. Definitely recommend!