I can only good things about my stay here! The apartment has an amazing location that can go walking for the most known attractions of the city. Without mention that on the same street has a supermarket and restaurants. Guillermo without doubt was the best host I ever had. He's very easy going and make us feel welcome. I get the best tips for exploring the city from him and even got to learn a little bit about history of the city lol
For sure I'll stay there again when I go to Madrid :)