Alfredo's place is easy to find from the Gran Via subway station: going north on the pedestrian shopping street for about 2 minutes and turn left.
When we arrived, Alfredo was outside the apartment greeting us. We recognized each other by facebook photos. He does not speak much English, but with Google Translate we can make basic conversation. He is very friendly, showed us the place that is just as described. The guest room is separate from his room by the living room so we each have complete privacy with also separate bathroom. The kitchen is well equipped and there are several grocery stores on the street.
And all these are on top of the perfect location: all we wanted to see are within 1 km so we did not use transportation except for going to the train station.
All in all, we had a very pleasant stay at Alfredo's.