Marga was very helpful via the online communication unfortunately, we did not get to meet her, but her son showed us the place and gave us a nice welcome.
The apartment is really spacious. It consists of 3 bedrooms (or four?) from which all but one are on airB&B. The rooms are very big and nicely fitted. There is a super cozy living room with a good tv. We were also free to use the very nice kitchen and coffee machine.
The apartment is extremely well located. In the midst of the city center. And the city centre of Bilbao is very nice and not noisy so that is also nice.
The bathroom was clean and modern.
For this money, it is really hard to find something better!