We did not get to meet Alejandro directly but his correspondence was great - he kept in touch via email and AirBnB app while we stayed at the room. We were instead met by Oscar, the building consierge who greeted us warmly, showed us the room, and gave us the keys. The listing description was great and the room was amazing. You do however have to be careful as very little daylight reaches the apartment and so it always feels like early morning - read: high risk for oversleeping! The neighborhood was great - it felt like a fashion district and was very posh. The people were friendly and there's a lot within walking distance. The metro stops right in front of the building and is easily accessible to reach everywhere else in Madrid.