The average monthly rent for a one-bedroom apartment in Santander typically ranges from €550 to €800, depending on the location and features of the apartment. In central areas like Calle González Besada and Paseo de Pereda, rents tend to be on the higher end of this spectrum, often exceeding €700 for modern, well-furnished units. In more suburban neighborhoods, such as Cueto or Peñacastillo, prices can drop to around €500 to €600. Additionally, factors such as proximity to the beach, public transport access, and the overall quality of the building can significantly influence rental prices, with newer developments commanding a premium over older properties. Some apartments may also include utilities in the rent, which affects the overall cost.