Annual car parking under cover in santander

hi,we currently keep our car in faro and have used it to discover the Portuguese area for a few years we would like to move it to northern Spain..Santander. and would like a annual undercover parking with easy connection to airport does anyone know of anything, we pay now for meet and greet and undercover parking 700 euros annually, any help appreciated.Thanks.BC

I would look at Milanuncios https://www.milanuncios.es.
Either purchase or rent a parking garage under some flats. Then use a bus or taxi to the airport.