I'm sorry to say that because of a family emergency I was not able to stay at Sergio's apartment. However, my nephew was able to go to Madrid. Sergio's apartment has two bedrooms and two baths. I was told by my nephew, a very observant mechanical engineer, that the apartment was really quite spectacular, that he didn't need earplugs to sleep (as one so often does in European cities) and that everything about the apartment was as he expected it would be.

My experience as far as exchange of e-mails with Sergio was very pleasant. Sergio answered any of my questions almost immediately -- and my nephew, who also communicated by e-mail with Sergio -- said that any questions that he had were immediately answered.

Should I go to Madrid in the future, I'd certainly consider attempting to stay at Sergio's apartment.