It was such a pleasure staying in Alvaro's apartment. The space is shared but he makes it as comfortable and private as possible for you. It is located in such a central area, my husband and I found that it was just a five minute walk to the city center (Puerta Del Sol) and a metro station is located right in front of the apartment itself! Alvaro hosted us better than we could have ever imagined and is part of the reason why our trip to Madrid is such a memorable one. He is very QUICK at communicating. We were able to message him freely about whatever questions we may have had. I would definitely recommend your stay here!