The average rental price for a one-bedroom apartment in Cantabria varies by location and type of property. In Santander, the capital city, prices typically range from €600 to €800 per month, depending on the proximity to the beach and city center. In smaller towns like Torrelavega or Castro Urdiales, one-bedroom apartments can be found at more affordable rates, often between €400 and €600. Additionally, coastal areas tend to have higher rental costs during the summer months, as demand increases with tourism. Key factors influencing these prices include the apartment's condition, amenities, and the local neighborhood's desirability.