Alfonso's flat is located in one of the nicest areas of Madrid, accessible to essentially everything in the city either by foot or by metro. It is small, but the layout is thoughtful and its size simply encourages you to see more of the city. My now wife and I came to Spain for our wedding and stayed here. We don't regret it. Alfonso was prompt, courteous, efficient and easy to deal with. The check-in process was smooth (even smoother than expected as he was actually walking around the city and saw us walking to the door!) and we felt at ease immediately. We would stay here again.