Hi Cat
Are you talking about the one that is by the rear entrance to Mercadona?
We bought our new washer from them and they offered an excellent service.
Delivered, fitted,and checked to be working plus they took old one away as well.
They were probabaly a bit more expensive than if you go to one of the big electrical stores like Tien21 or MediaMarkt but they were very convenient and delivered within 24 hours - which as we had people arriving in the apartment was good news for us.