If you arrive in San Sebastian at the bus station or the train station, you have it very easy. Both are next to each other. To get to pension aida, it is only a 4 minute walk. You walk 600m along Paseo de Francia, north direction, until you find Iztueta street, the street of the hotel! You will only have to continue down the street a few more steps until you find the main entrance, on the corner with Iparraguirre street.