Luis greated us with kindness and warmth and had lots of great tips and adresses for our visit in Bilbao, and the whole area ( The whole coast ).
The flat was neat and clean. The location is great for the price : very easily walkable and if you prefer to go to the center quicker : the metro and the underground walking tunnel leading to the center of town is very close (and convenient).
I would recommend Luis's place for a nice and economic stay :)