The average rental price for a one-bedroom apartment in O Porriño typically ranges from €400 to €600 per month, depending on the specific location and amenities offered. In more central areas close to the town square, prices can be on the higher end, often around €500, while apartments a bit further out may be available for €400. Factors such as proximity to public transportation, local shops, and parks can also influence rental rates. For instance, a modernized one-bedroom flat in a newer development might command a higher rent than a traditional, older building. Utilities are generally not included in the rent, which can vary based on usage and the size of the apartment.