The flat is located nearby Metro, Train and most of the facilities needed.
Lurdes and her family was fantastic helpful and friendly. My luggage got lost so I did not have much the first night, but was offered clothes for the cold evening. They also helped me receiving my luggage when I could not be around for it.
Bilbao was also a nice city. I did really enjoy my stay, but unfortunately not enough time to see more.
I do recommend other to stay here if you are travveling to Bilbao.