This apartment is just as beautiful, spacious, and has all amenities as described. The apartment is well lit and tastefully decorated. We stayed for 5 days so especially appreciated the space to spread out our things and that there was a clothes washer and clothes dryer for us to use. The kitchen had everything we needed. The bath towels and bed linen were excellent quality and made us feel at home.
The apartment is on a historic street and is a great location, central to many of Madrid's most famous attractions and museums. We easily walked to Plaza Mayor, Puerta del Sol, the Prado Museum and all areas in between. Plenty of options for eating, drinking and shopping just steps outside the apartment building. Though it was closed for renovation while we were there, a metro stop is less than 5 min walk away. The popular Cheuca gay neighborhood is within 10 min walk away.
In modern times the area around the apartment has ladies (and men) hanging around offering good times. These people didn't make the neighborhood feel seedy nor dangerous to us. Most of them were quite friendly and we never felt bothered nor offended by any of them. Their business activity was completely low key and after our initial surprise we simply ignored them. In fact we didn't notice much street noise at all during our stay even though there are bars and restaurants all around.
Because of changes in flight times and an ongoing taxi strike, our check-in and check-out times were hectic and unscheduled. So we did not get to meet our hosts, but Amparo worked with us, replied immediately to all our questions, concerns and arranged key exchange that worked out well. We had an excellent adventure in Madrid and Juan Carlo's apartment was the perfect place to recharge and appreciate our time there. We highly recommend you it to anyone coming to Madrid.