Immaculately clean apartment with everything you could need. It is not in the centre but there is a metro very close and all the main sights in Bilbao can be reached in 15-30 minutes.
Host very friendly and flexible about check in and provided metro card that can be charged, and even basic food ingredients are provided.
Good easy parking, plenty of local shops and bars. If staying in the centre is not a priority you won't do better.