Gabriel is a good host: even if it´s a rentals company, he gave us tips and suggestions about the neighbourhood and he let us doing the check in at 1am, that was the only time possible for us. The apartment itself is very nice and confortable and the neighbourhood is great: full of nice restaurants, pubs, and café. It´s very near to metro station Bilbao and if you want, you can even walk to the city center (it´s just 15min away).
I would stay there again!