Not all of it is based on true stories. It's a mix of fictional elements and possible inspirations from real-life incidents, but it's not a straightforward documentation of actual events.
I'm not entirely sure without reading it, but it may tell a fictional story set in a New York hotel. It could involve love affairs, mysteries, or the daily dramas that occur among the people who cross paths in this hotel. For example, it might be about a detective trying to solve a case that has some connection to the hotel.
I'm not entirely sure about the specific 'oro plata mata' story. It could be something specific to a certain region, culture or even a local folktale. Without more context, it's difficult to provide a detailed account.