Carlos is such a perfect host! Welcoming, available and kind, he will help you to feel like home in this foreign city of Bilbao. He's a great source of intel to ease your life and help you discover the town.
The appartment is beautiful, well situated in the casco viejo, the old city. From the appartment you can visit the city easily by feet, 30 mns top for the Guggenheim.
Thanks again Carlos!