The city centre of Seville is quite compact and full of pedestrian only areas, so walking is really the only option. Having taken a #32 bus from Santa Justa station to Encarnacion, I made this my base for further explorations. Besides visiting the WHS I enjoyed an early morning stroll through Barrio Santa Cruz while waiting for the Archivo to open at 10am.
An outstanding feature of Seville were the generous discounts offered to seniors at the cathedral and the Alcazar.