Please explain me how it works. I'm following this graphic: https://wiki.openstreetmap.org/wiki/File:Railway-station-tagging_simple.svg
According to this, the building should be tagged as building=railway station (independent from the actual station), while the station itself is located in the the tracks.
The railway=stop is something else.
For the station name: there's no explaination on this link, but compared with usage in other areas of the world, "station" (or in this case "Estación") seems not to be part of the station name.