Staying at Álvaro's was a great experience. He is a very caring and attentive host. He made dinner for the both of us on my first night, offered me tips on the city, coffee, chocolate :) The place is very nice and clean. It's a bit small but if you are looking for a sharing experience it's perfect. And the location is very central, perfect if you'd like to discover Madrid by walk. I would definitely recommend Álvaro's place for a stay in Madrid.