The average monthly rent for a one-bedroom apartment in Poble Sec, a vibrant neighborhood in Barcelona, typically falls between €800 and €1,200, depending on the apartment's condition and location. Newly renovated apartments or those situated close to public transportation and popular amenities often command higher prices, sometimes exceeding €1,300. For instance, a modern, well-furnished apartment in the heart of Poble Sec might be listed at around €1,100, while older units in less desirable locations could be available for around €800-€900. Additionally, factors such as the time of year and the demand for rental properties can influence prices, with the summer months sometimes leading to higher rental costs.