Apologies for not answering earlier on. Yes the rooms do have a hairdryer.
Yes the rooms have hair dryers
Yes - all rooms have hairdryers.
Yes they do, or you have to ask at reception. I know I had one there.
Yes! When l stayed in the beginning of this month, there was a hairdryer in the bathroom.
Get an answer from Mercure Bilbao Jardines de Albia staff and past guests.