Blanca Martín

Blanca Martín is not mentioned in either of the provided news articles. The articles discuss Álvaro Sánchez Cotrina's victory in the PSOE primary elections in Extremadura and the profitability of Spanish hotels in Europe. Therefore, it is impossible to provide any information about Blanca Martín's background, newsworthiness, recent events, or current relevance based on the given context. The articles focus on Spanish politics and the hotel industry, respectively, and do not contain any information related to a person named Blanca Martín.